Users using Outlook 2013 not seeing entire public calendar.

I have two users that have same access as all other users. They can get into the public calendar but they can not see the entire calendar. They don not see anything from about the last month.
Exchange 2010 and Outlook 2013
Thanks in advance.

That sounds to me like they have a partially synchronized copy. Look to see if they've tried to synchronize the folder, and if so, delete the cache and download the content again, or switch it to be used online. Shared calendars should
generally be used online anyway to avoid ugly race conditions where users wipe each other's changes out.
Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."

Similar Messages

I am using outlook 2013 for my emails. My junk emails get automatically deleted. I have had several people say they sent me emails and i can not find them. They are not in any of my inboxs. Can anyone please help

I am using outlook 2013 for my emails. My junk emails are gettting automatically deleted. Problem is i am getting sent emails from schools and others that i
am just not receving. It;s not in any of my inboxe. I am losing alot of important info and don't know why. Please help

If you suspect they are being marked as junk and deleted, turn off the auto-delete. Being that Office is a Microsoft product, you should ask them how to do that: http://www.microsoft.com/mac.

Outlook 2013 not connect with Exchange server 2013 in internal network

Hello All,
I Have two Exchange server 2013 in our environment. Both server install mailbox and CAS role. After configure exchange server 2013, Outlook 2013 not connect in internal network. I have configure outlook manually. i tried by using the suggestion from blog
but not work. Outlook show that Server cannot connect/ server name could not be resolved. in outlook setting i also put exchange proxy setting. In exchange admin center i have changed the OWA, OAB, Auto discover name. But still not work.
I know that outlook can be connect from external by using ssl certificate and publish outlook anywhere but i did my configure from internal network.
Can you please suggest as soon as possible.
Thanks,
Parvez

Hi,
Firstly, I’d like to explain, same with external users, internal users use Outlook Anywhere to connect with Exchange server and use Autodiscover get all settings.
Thus, let’s try the following resolutions:
1. run the following command: get-clientaccessservice |fl autodiscoverserviceinternaluri
2. check if the host name in the above URL is in the DNS server and there is a DNS entry about the host name points to the proper IP address.
3. Check if the above host name is in your certificate.
Thanks,
Angela
Angela Shi
TechNet Community Support

Lightroom 5 stops working after trying to email photos within LR and using Outlook 2013

I recently upgraded to Lightroom 5 and was tryinhg to email some photo via the Lightoom Send Email dialog. My default email is Outlook 2013 and I am using Windows 7 64bit. When the dialog is filled and send email is selected LR 5 says "Lightroom has stopped working". I think there may be an issue with the email.dll in LR5. I have seen where others not using Outlook 2013 seems to be having success. Looks like LR5 and Outlook 2013 not playing together nicely. Any help or getting this issue elevated to Adobe higher support appreciated.

I was able to send emails before.
OS - 8.1 (64Bit)
Office - 365 (64Bit)
Log Name:      Application
Source:        Application Error
Date:          17/11/2013 21:50:11
Event ID:      1000
Task Category: (100)
Level:         Error
Keywords:      Classic
User:          N/A
Description:
Faulting application name: lightroom.exe, version: 5.2.0.10, time stamp: 0x52288c50
Faulting module name: Email.dll, version: 5.2.0.10, time stamp: 0x52288a01
Exception code: 0xc0000005
Fault offset: 0x00000000000148af
Faulting process ID: 0x14d0
Faulting application start time: 0x01cee3ddfaab54ec
Faulting application path: C:\Program Files\Adobe\Adobe Photoshop Lightroom 5.2\lightroom.exe
Faulting module path: C:\Program Files\Adobe\Adobe Photoshop Lightroom 5.2\Email.dll
Report ID: 3b05bf7a-4fd2-11e3-be8a-d43d7e4c6101
Faulting package full name:
Faulting package-relative application ID:
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
    <Provider Name="Application Error" />
    <EventID Qualifiers="0">1000</EventID>
    <Level>2</Level>
    <Task>100</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2013-11-17T21:50:11.000000000Z" />
    <EventRecordID>14532</EventRecordID>
    <Channel>Application</Channel>
    <Computer>MasterXs</Computer>
    <Security />
</System>
<EventData>
    <Data>lightroom.exe</Data>
    <Data>5.2.0.10</Data>
    <Data>52288c50</Data>
    <Data>Email.dll</Data>
    <Data>5.2.0.10</Data>
    <Data>52288a01</Data>
    <Data>c0000005</Data>
    <Data>00000000000148af</Data>
    <Data>14d0</Data>
    <Data>01cee3ddfaab54ec</Data>
    <Data>C:\Program Files\Adobe\Adobe Photoshop Lightroom 5.2\lightroom.exe</Data>
    <Data>C:\Program Files\Adobe\Adobe Photoshop Lightroom 5.2\Email.dll</Data>
    <Data>3b05bf7a-4fd2-11e3-be8a-d43d7e4c6101</Data>
    <Data>
    </Data>
    <Data>
    </Data>
</EventData>
</Event>

OUTLOOK 2013 not sync'ing

I am getting very frustrated and wondering if anyone else has seen this problem. I have search the database and have found nothing that is relating to my problem
Here is the Basics:
1. Using Outlook 2013 on windows 8.1
2. Also using mail on windows 8.1 (same problems)
3. I am using @live.ca email account
4. I have setup on a windows 7 laptop and outlook 2010 and everything works.
5. I delete the accounts and reinitialized many time
6. I have repaired datebase many times
8. I have forced the sync of groups and mail boxes
PROBLEM
I cannot get the mail account to sync all email. If I switch the setting to sync only one month everything works great. There are no issues, but have to go to the web app to search beyond one month. The moment I switch to sync all then nothing works. Both
Outlook and Windows 8 mail report issue of not connecting to server. If you shut down the computer and re-sync you see it connect... sync for a bit the give up with an error of not connecting to server. If you leave the program (outlook open for a few days
it sporadically syncs some data without any pattern to the data it does sync, and the connection error is always prevalent.
Please Help
Jason

Hi,
Please disable the firewall and anti-virus program temporarily, especially virus scanner integration in Outlook, check if the issue persists:
http://www.msoutlook.info/question/20
Since you have reinitialized the account many times, we can also try creating a new Profile to setup the account in Outlook, which will also generate a new .ost file to sync:
http://support.microsoft.com/kb/829918/en-us
Regards,
Melon Chen
TechNet Community Support

Outlook 2013 not caching secondary mailbox

Hi, We are using Outlook 2013 and it appears that when adding a secondary mailbox through Account Settings --> Change --> More settings --> Advanced tab -->
Add, it does not cache the secondary mailbox. This results in access to that mailbox and calendars being really slow.<o:p></o:p>
The user previously had Outlook 2010 and it was working fine. I have made sure that all the cached mode options are enabled but the secondary mailbox
still shows as 'Online.'
Thanks

Hi,
The slow access may be caused by too many shared folders in the secondary mailbox. The following KB is a detailed analysis about this performance problem:
Performance problems when you try to access folders in a secondary mailbox in Outlook
http://support.microsoft.com/kb/2297543/en-us
Hope it helps.
Thanks,
Winnie Liang
TechNet Community Support

Can't schedule meeting on resouce mailbox (Exchange Online) using Outlook 2013

Hi,
Here on my organization we use some resource mailboxes to schedule the meetings on our meeting rooms.
There are 5 users as owners and everyone else has only Limited details on them.
Today, on my Outlook 2010, I just open the calendar, go to the room I want. Search for an available date/time and double click (or right click and select Request New Meeting). Then it opens a new windows with the room on the "To:" box and
I can fill the other details.
Then I recieve an e-mail saying that my meeting is waiting for approval.
One of the owners approve and then my meeting appears to everyone on the organization.
No one was having problems with that... but today, using Outlook 2013, users just can't double click to send a request of a meeting. It says that the user doesn't have the rights to do it. The only way is to click on the "New Meeting" button and
then add the room in the "To:" box.
So... I was reading some comments about "Direct booking" not working anymore for Outlook 2013. Is it right? I mean... It's a downgrade for my point of view.
On Outlook 2010 it works everytime (tried creating the same user account on my machine and worked like a charm).
Today I verified that, after uninstalling and reinstalling Office 2013 on the user machine:
On Outlook 2013 version 15.0.4433.1506 is working.
On Outlook 2013 version 15.0.4701.1000 it's not working booking a meeting using double click.
So is not a rights problem. Is an update problem.
Any1?

Hi,
This is Exchange server 2013 forum. Actually, we have a dedicated support team regarding the Microsoft Office 365. I recommend you ask your question on our Microsoft Office 365 forum which is staffed by more experts specializing in this kind of problems.
Thanks for your understanding.
For your convenience:
http://community.office365.com/en-us/f/default.aspx
Hope this can be helpful to you.
Best regards,
Please remember to mark the replies as answers if they help, and unmark the answers if they provide no help. If you have feedback for TechNet Support, contact [email protected]
Amy Wang
TechNet Community Support

Missing emails on Outlook 2013, not happy.

Bought a new PC and on previous PC was using Outlook 2010, new PC uses Outlook 2013. After synchronising with the server I have emails dating back to 2009, which is fine, but there are a lot of emails missing from Nov 2014-Mar 2015. No matter
how many times I hit send/receive they just dont show up in Inbox. How can I get these emails back?

Hi
As per the information and details provided by you, to solve the issues of missing emails in Outlook 2013, please follow these steps: -
Get the files from old computer
Put files on New Computer
Create a Profile
More Settings
Add Old Data File (.pst)
Finishing Touches
Signature and Stationery
Do you leave mail on POP3 server? By default Outlook 2010 and Outlook 2013 automatically leave POP3 mail on the server for 14 days.
Things to keep in mind when you are preparing the new computer: -
You really only need to move the PST and create a new profile using this PST, the other files Outlook uses are created as you use Outlook.
If you use Windows Easy Transfer to move your Outlook data, you can need to recreate your Outlook profile as the move process can corrupt. You can only move user data,
not the program itself.
Your accounts are stored in the registry and need to be recreated on the new computer.
I hope this information will be helpful for you.
Thanks and regards
Shweta@

Outlook 2013 not warning of oversized email

We have a 10MB limit for emails on our server. We host but not on an Exchange server. I have a few Users who are NOT getting the warning that their email message is over the limit from Outlook. Outlook sends the email instead of placing the email in the
Outbox and the User assumes the message is gone. The server actually deletes the email but the User still doesn't know that. Any ideas why Outlook is not warning with the prompt?

Hi jpwesty55,
Might be these given links can help you more:
http://arstechnica.com/civis/viewtopic.php?f=17&t=1115668
http://social.technet.microsoft.com/Forums/en-US/a2f1e34c-8a3e-4ae3-9903-c3c68fbddb3a/outlook-2013-not-warning-of-oversized-email?forum=outlook
Note: Improve community discussions by marking the answers helpful.
Thanks
Clark Kent

I'm a normal user, using cad programme, not using my laptop for games, my question is: do I need to get 16 gb ram in my retina macbook pro or 8 gb ram is pretty enough?

I'm a normal user, using cad programme, not using my laptop for games, my question is: do I need to get 16 gb ram in my retina macbook pro or 8 gb ram is pretty enough?
Thanks for support.

8 GB may be sufficient for CAD but 16 would be a much better idea.
All the Macs I have ever owned were eventually upgraded to the maximum amount of memory they could use. Considering that as of now, the RAM you specify is all the RAM you will ever have, get as much as you can. That is the only way to maximize its economic life.
If Apple offered a 32 GB version I'd get it.

Outlook 2013 not saving Office 365 Credentials in Roaming Profiles

Hi,
We have migrated one of our Exchange Mailboxes to our Office 365 Environment, we have had all the relevant DNS entries put in place, so when the user logs on and opens Outlook 2013, the Wizard picks up there Office 365 Mailbox and configures, it
asks you for User Credentials, and you type them in and select remember and then Outlook open fine with all the emails presented,
THE PROBLEM: After this user logs off and logs back on to either the same computer or another computer, and they open Outlook, you are yet again asked for your Credentials again, it remembers the username and not the password, once you enter the
password and click remember password it opens Outlook fine
Looking in Credential Manager, I can see that after selecting Remember Credentials, it is putting an entry in Generic Credentials, however when you log off and on again these disappear, I have added Manual Entries in Credential Manager and these
are saving!
I have noticed that in %USER%\AppData\Local\Microsoft\Credentials when you open Outlook and select remember password, it is adding a system file in here, so I decided to try copy the file to %USER%\AppData\Roaming\Microsoft\Credentials, when I log
off this is writing back to the server, and when I log back on it is downloading, HOWEVER when I open Outlook, it still asks for the password! And when I type it in and select remember, it adds the system file back in %USER%\AppData\Local\Microsoft\Credentials,
and ignores the Roaming one,
So currently I am using a Logoff and Logon Script to copy these Files too and from the relative folders and this works, however it is not ideal
The Script:
LOGOFF
'Test
xcopy %LOCALAPPDATA%\Microsoft\Credentials %APPDATA%\Microsoft\Credentials\ /H /Y
rmdir I:\MSCRM /S /Q
xcopy %LOCALAPPDATA%\Microsoft\MSCRM I:\MSCRM /H /Y /I /E
LOGON
xcopy %APPDATA%\Microsoft\Credentials %LOCALAPPDATA%\Microsoft\Credentials\ /H /Y
xcopy I:\MSCRM %LOCALAPPDATA%\Microsoft\MSCRM /H /Y /I /E
MY QUESTION:
So I guess my question is how can you get Outlook to look at the %USER%\AppData\Roaming\Microsoft\Credentials instead of the Local one?
Regards
Andy

Hi Andy,
According to your description, I understand that Outlook always ask for password even through you have selected remember password after migrate mailbox to Office 365.
If I misunderstand your concern, please do not hesitate to let me know.
I want to double confirm some points, please help to collect answers for following questions:
1. Is there still any Exchange server On-premise?
2. All user or any special account experience this issue?
By default for On-Premise environment, the Outlook client finds AutoDiscover also by using SCP first, if it can’t success. It will turn to use DNS.
Please try to remove SCP by ADSI Edit then try again, I find an thread about remove SCP and a similar thread about your question, for your reference:
https://social.technet.microsoft.com/Forums/en-US/3559c142-2c42-4749-9476-422ab7449853/autodiscover-url-migration?forum=exchangesvrdeploylegacy
https://social.technet.microsoft.com/Forums/en-US/566616d9-d4c0-4d66-bf23-70541faf2c88/disabling-ad-autodiscover-while-migrating-to-office-365?forum=exchangesvradminlegacy
Besides, this issue may be related to Office 365. Please contact Office 365 Team so that you can get more professional suggestions, please refer to:
http://community.office365.com/en-us/default.aspx
Best Regards,
Allen Wang

Outlook 2013 Not Synching Folders

Hi all,
I am having an issue with Outlook 2013.
It seems that for some reason it will not recognize my Username and password for Synching folders.
It works for sending and receiving messages, but when it tries to synch folders it comes back as wrong.
How can this be possible, doesn't it use the same UN/ PW for sending/ receiving as synching??
Thanks in advance.
IKE
PS: Moved to general forum

Hi,
I suggest you remove Outlook credentials from Credentials Manager in Windows, then re-type your password to check if this issue persists:
1. Exit Microsoft Office.
2. Go to Control Panel.
3. Click User Accounts.
4. Click Credential Manager. In the Generic Credentials
section, you should see one or more credentials listed. You're looking for credentials that begins
MS.Outlook.
5. For each credential that begins with MS.Outlook,
A. Click the details button (circle with a downward arrow next to the
Modified date).
B. Click Remove from vault.
6. Repeat steps 5A & 5B for each credential that begins MS.Outlook.
I hope this helps. If it doesn't, delete the account and setup the account again to check the result.
Regards,
Melon Chen
TechNet Community Support

Outlook 2013 not compatible with Exchange 2003

Hello
Some of my customers bought SBS 2003 R2 just before SBS 2008 was released so they have systems which are only 4+ years old. SBS 2003 came with Exchange 2003 pre-installed. Outlook 2013 does not support Exchange 2003. So they cannot upgrade their Outlook
clients to 2013 version.
Microsoft, is this correct?!

If this post is hard to read, it's because of Dragonsoft!! (sometimes it is like auto-correct on the phone - "I said WHAT!??")
Overall I think this is the most interesting thread that I have ever read on Microsoft.com.
As a computer for professional for over 30 years, I've always followed the context that software products are designed for a three to five-year term, to have more is a luxury.
When I was first in the industry (1983), Microsoft had a tendency to change the software versions every year to two years. As we approached the era of Windows XP there was an expected lifetime use of three years. Every two years a new product would appear.
So, when windows XP lasted well beyond the three-year term, it was pretty exciting to not have to spend money on new product, and we all enjoyed the decade of Windows XP.
The new generation of IT professionals has somehow believe that software products should live more than five years, and it just blows my mind!
The reason that I make this post, is because I've used SBS ever since Back Office Server 4.5, and the versions of small business server (now called Small Business Server) have always appeared on the market 1 to 3 years after the primary versions of
Windows for which they are named. So I always felt that there was a disadvantage to using small business server in that the products appearing inside of SBS had been on the market for a few years before being incorporated into the SBS package. It
made me feel, at first, that Microsoft was waiting on the level of maturity within the product before creating the SBS package. Now that I look back on the whole process it made me think that the SBS team had some difficulty merging the products into a install
package which could handle the intricacies of the licensing limitations on the SBS system.
SBS 2003 was a great tool when it came out, but I found that it was riddled with security holes. To say the least some of my first SBS 2003 servers had their exchange system hacked by outside influences. (These were external facing servers who had websites
and exchange server running with public domain names, even though there were firewalls!) After a few patches, DNS modifications, reverse DNS entries, and some changes in the exchange system, I was finally able to make the system secure and solid.
My first real nightmare with SBS was when upgrading to SBS 2003 R2, which, yes, appeared around 2005. You cannot simply upgrade a machine from SBS to a new version. You must purchase a new server, install the new SBS version, and migrate your
entire installation to this new host. (While running SBS 2003 for several years and making backups on a tape, I realized that the new hardware on the market would not support a restore from my tape backup!) The whole process is rather daunting as not
all of the detailed steps to upgrade work as expected. I had to call, and pay, Microsoft to complete the process because exchange had trouble during the migration.
So off we went with our new installation of SBS 2003 R2. Then along came SBS 2008! I went through the same steps again... new hardware, new software, and, yes, paid Microsoft, again, for support to migrate.
When SBS 2011 appeared on the scene I was willing to upgrade again. Having gone through this, twice now, I fully prepared the client to purchase a new system and to purchase the new software. But because I was faced with the whole entire
nightmare of new hardware, migration, and having to call Microsoft to complete the process, I decided on a new approach. This time we were going to buy server which would run VMware. (I was not going to get stuck in a hardware box that I could not replace
if I ever needed to restore the operating system due to a massive failure.) So off I went, purchasing a new box, installing VMware, and installing my favorite operating system, Microsoft SBS!
Well, to say the least, it wasn't exactly as exciting as I had expected. Had some trouble getting VMware to settle into the new hardware, as there seemed to be some compatibility issues, but was able to work it out. Eventually, I was able to get started
on the migration. Things went well up until the point that I got to the exchange migration, and ran into a similar problem as before! A call to Microsoft revealed that it was even a little daunting for the support personnel, but as I documented the things
that they modified, and even performed a little cleanup, after they performed their cleanup! I can happily say that I'm no longer worried about hardware issues, when it comes to restoring my SBS server in case of a failure!
Overall I'm pleased with having used Microsoft SBS solutions over the past 10 years, but I would never expect, nor would I lead my customer to expect, that a product should last 10 years!
Previous comments have indicated that server should last seven years because they can be depreciated that way, I believe that to be entirely false! I live in Texas, and the state of Texas DIR program has adopted standards which state that
you should replace your hardware every five years! State agencies have this as a requirement, and it is not optional! Many state agencies have gone to leasing their equipment, which is a three-year term. (Where do you think off-lease equipment comes
from, anyway?)
One of my primary clients looked at me one day, and directly ask, "Okay, if we spend the $10,000 on the new server and software, how long should it last?"
Obviously, I wanted to say, "Forever!" But, remembering something that my mother had said (always plan for the worst and you always come out on top!), I said back to them, "I believe we should plan for a three-year lifespan, and if we get
any more than that, it will be a luxury." Needless to say, there have been some upgrades which lasted well more than three years, but there have been some which have been spot on.
The SBS server is a huge savings over purchasing the individual products separately. But there have always been some drawbacks during the upgrade process which makes the entire feasibility of the installation top-heavy when it comes to support costs.
I have noticed is that the SBS servers require more labor to keep them running smooth, especially with backup procedures and backup software, as SBS always requires a third-party product to make a "real" (restorable) backup.
A client's expectations should be that you are taking care of their business without them having to worry about what takes place in the tech room. They understand, and realize, that they can pay you a specific amount of money for your support without necessarily
having to purchase new hardware. But a good, healthy relationship with your client means that they should always be willing to upgrade, whether it is a workstation or server.
If you allow a client to be painted in a corner, then it's not their fault, it's your fault! Because, they have no idea what the new technology can do, and don't realize what's on the market. It's your job to keep up with what's current and to deliver
expectations which make them realize that each year has a dollar value attached to it, whether it is spent, or not.
If you have a client is unwilling to spend money to upgrade their equipment, then there's something else wrong with their business, and you should probably consider that they may not be in business for very long. So don't make it your problem when
they are unwilling to spend money. You don't work for free.
One last, quick example of the conversation that I had with a client who was unwilling to upgrade because things seem to be working so well. I put it like this, "You pay me to make certain that your business operates in good times and in
bad. Right now, everything is fine. If your building were to burn, and the only thing we had were the backups, I cannot go out and purchase new hardware and restore your system successfully. The equipment that we have operating here is no longer
available on the market. If I were to find the equipment, it would be out-of-date, and most likely, used, and I cannot guarantee its compatibility or functionality. So, if I can't restore your system to an operational status, then what would you do?
I don't believe there are any number of man-hours you can use to recover the information lost. You would probably have to go out of business! If your business becomes my business, then I would try to move to a position where my data is safe and my business
can continue in the case of catastrophe. The only way I can do this, is to purchase new hardware, new software, and put you back in a position of compatibility with the market. One of the things I always try to do is keep your business operations at a point
where if I die, someone else can come in and take my place. The whole idea here is to keep your business going."
It didn't take them long to come back and surprise me, "Make a list of what you need. Don't give us a list of what we need to get by, tell us what we need to be productive for several years. We don't want to patch this together
and always have problems."
And just as a note, your customer can write off $10,000+ per year for new equipment purchases. I think the number may be higher now. I had one customer who purchased a $15,000 system in December and wrote off $10,000 in one year and the other $5000,
a month later, in the next year!

Ribbon behavior using Outlook 2013 vs IE

We are running CRM 2011 on-premise and using the 2011 CRM for Outlook client RU 18.
Most users are still running Office 2007 and the issue below does not occur as far as I know. However some users are now running office 365 and issue below occurs. It does not occur when using IE (users are on IE 11)
Issue : When attempting to create a new record on a custom entity using outlook client via outlook 2013 an error occurs.
The error received is from a web-api call that is custom built. These web-api calls get fired when opening an existing record to determine user roles etc. The buttons that fire these rules are not displayed unless the formstate = existing (among
other rules). We did not have a similar rule on the ribbon button enable rule to check of formstate= existing.
In IE this works fine. However using the new button in OUtlook it appears the enable rule still fires. In some cases these custom web-api calls are supposed to pass an entity guid, which in this case there is none yet.
We have modified the enable rules on several buttons to specifically account for the formstate rule and this seems to help.
Has anyone heard of anything similar. Again as far as I know this started to happen when Office 365 /outlook 2013 was installed.
Robert

Hello IMPACTMatt,
I'd say a cookie is suggesting the username. She has inherited a computer from someone else, right?
Regardless of that, can she log in?
Best regards George

Outlook 2013 Not Responding and Offline Address Book Issues with Office 365

Around 3 months ago I setup a small business with Office 365 for email. They have 10 PCs, all running newly installed Windows 7 Professional 64-bit, eight with Office 2013 and two with Office 2010. All are connected to a local domain (Server Essentials
2012) with a single internet connection through a new TP-LINK router. Each user logs into their own PC only.
The network runs perfectly, internet connection is good but there seems to be RANDOM, INTERMITTENT issues with email not being SENT from Outlook every so often. Email will sit in the outbox for up to an hour sometimes before, eventually, being sent. Incoming
email seems ok, although this is more difficult to tell. At others times, email will be sent instantly - the size of the message and any attachments makes no difference.
The issue has happened at some point on every one of the PCs but no particular PC/user seems worse than any other. When email is stuck on one user's PC it can still be sent ok by other users at the same time - so the internet connection is not down. Users can
can always login to the OWA service ok and iPhones etc. all sync ok even when email is stuck in the Outbox.
To debug the issue I have worked on one particular user's PC and carried out the following changes -
Changes that made no difference
I have checked the router. A SPI firewall is available on the router but this is switched off.
I have changed the MTU on the router with no effect.
There are no unsual add-ins to Outlook
Outgoing email virus scanning is disabled
Outlook is NOT integrated with Lync
The OST file is around 1.7 GBytes is size.
I have recreated the Outlook profile twice but this made no difference
Switched OFF "Cached Exchange Mode" - this made things worse !
The Outlook address book is set to \Offline Global Address List
I have disabled with Windows firewall on the client PC - no change
I have adjusted the KeepAliveTime for packets in the registry of the PC to 20 minutes
Changes that reduced the frequency of "Not Responding"
I have changed the Outlook automatic Send/Receive time from 30 to 10 minutes - this seemed to help
Possible Related Problem
I have attempted to download the offline address book manually - this hangs at "Copying offline address book template file" in the Send/Receive dialog and there a NO OAB files in the data file location on the PC.
So the only measure that has so far "helped" has been the Outlook Send/Receive time change - now set to 10 minutes. Even so, Outlook will occasionally go "Not Responding" for 30 minutes or more (no windows active - only option
is to close and reopen Outlook).
There does seem to be a problem with the Offline Address book. I can download this ok for this user on my home PC (Outlook 2010) but this will not download manually on the work pc with Outlook 2013 (despite following all the debug steps above).
On work PC I can see literally hundreds of "Schannel" errors in the Windows System event logs -
Error - Event 36888 Schannel
The following fatal error was generated :10
The internal error state is 10
These errors occur every 2-4 minutes continually all the time Outlook is running. When Outlook is closed the "Schannel" errors stop !
Can anyone suggest what else to try, please ?
I have already investigated this issue on the Office 365 Community Forum, and the Outlook forum and they suggested that it was a client (i.e Outlook) issue and that I should post here for further information.
Thanks for reading !

An update to this problem.
I brought one of the office PCs back to my home network and connected it up there. With no changes to the PC I was immediately able to download the Offline Address Book without errors.
This suggests to me that there must be some problem with the internet connection or router setup in the office environment.
The router is a TP-LINK W8970. The internet connection is PPPoA. I have seen some suggestion that an SPI firewall can cause issues. This router has an SPI firewall but this feature is disabled on the router.
While investigating this issue I have frequently been connected remotely to an office PC - sometimes for up to an hour or more. During these periods I have not experienced any connection dropouts so the actual internet connection seems to be ok (i.e. it is
not dropping out).
However, something seems to be preventing the Outlook client from connecting properly with the Office 365 Exchange server in the office environment - or something is dropping the connection to Outlook. Does anyone know of any router settings that might affect
this ?
I could try changing the office router but I do not have a spare available. Can anyone suggest a reasonably low cost, currenbtly available router that they know definitely works in the Office 365 environment so that I could buy this for test purposes ?

Users using Outlook 2013 not seeing entire public calendar.

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