Outlook Password prompt for Linked Mailboxes from certain Domain

Hello,
As part of a migration project, I'm trying to connect Outlook with Linked Mailboxes from users in a trusted domain.
I'm able to create the linked mailbox on the Exchange 2013 (CU7) server without any issue, but when I try to configure Outlook for these mailboxes, it is prompting for credentials permanently and won't start. Log on to OWA with the same user from the trusted
domain is working fine.
I'm able to configure Linked mailboxes from another trusted domain without any problems.
I've already recreated the trust between these two domains (validation tells everything is ok)
DNS is configured with conditional forwarders in both domains and name resolution looks ok to me (ping and nslookup)
When I look at the LinkedMasterAccount of the mailboxes from this domain, I can see that there is only the SID (S-1-5-21-4033829......). The other linked mailboxes (from the other domain where it's working) are showing the Account name (domain\user)
Internal and External ClientAuthenticationMethod of OutlookAnywhere is set to NTLM
Infos:
DomainA: Domainlevel 2012 - Exchange 2013 - Forest trust to Domain B and C
DomainB: Domainlevel 2008 - Exchange 2010 - Forest trust to Domain A - Outlook for linked Mailboxes of DomainA works fine
DomainC: Domainlevel 2008 - Forest trust to Domain A --> can't connect Outlook to LinkedMailboxes of this domain.
Is there anything else I can check?

Hi,
Please check whether the server is configured to only accept NTLM version 2 and reject NTLM and LM, and the Outlook client computer is not configured with the same LAN Mananger authentication level.
Check DC, Start -> Programs -> Administrative Tools -> Security Options -> Note the LAN Manager authentication level.
Check DC's policies, Start -> Programs -> Administrative Tools -> expand Security Settings\Local Policies -> Security Options -> Note the Lan Manager authentication level.
IMPORTANT： You may also have to check policies that are linked at the site/domain/organizational unit levels to determine where the LAN Manager authentication level must be configured. Configure the LAN Manager authentication level to "Send
NTLMv2 response only". If you want to implement NTLM version 2 in your network, make sure that all computers in the domain are set to use this authentication level.
Thanks
Mavis Huang
TechNet Community Support

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Outlook password prompt for mailboxes on Exchange 2013 CU1

I migrated a few users from our Exchange 2007 SP3 Update 10 server to Exchange 2013 CU1. Now in Outlook they are getting a password prompt, and it won't accept their password. Our public folders are still on Exchange 2007 if that makes a difference.
I tried running
Test-OutlookConnectivity -GetDefaultsFromAutoDiscover:$true
but it says it doesn't recognize the parameter -GetDefaultsFromAutoDiscover:$true
Here's the values for Get-OutlookAnywhere:
ExternalHostname : legacy.domain.com
InternalHostname :
ExternalClientAuthenticationMethod : Ntlm
InternalClientAuthenticationMethod : Ntlm
IISAuthenticationMethods : {Ntlm}
ExternalHostname : mail.domain.com
InternalHostname : clippers.domain.local
ExternalClientAuthenticationMethod : Negotiate
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IISAuthenticationMethods : {Negotiate}

Hi GraffitiK
How is your test? Did the issue resolve?
Cheers
If you have any feedback on
our support, please click here
Zi Feng
TechNet Community Support

Exchange 2010 SP3 outlook prompot password for linked mailbox

Hi All,
I have forest A and forest B, there is an Exchange 2010 SP3 server in forest A, linked mailboxes are created for user inside forest B. Trust relationship can be verified , in place and active. Suddenly , some linked mailbox user got outlook password prompt
repeatedly but OWA and Active Sync is still working fine.
I have reset Exchange Web Services Virtual Directory. but the issue still persists. Please advise
Regards,
Zaw
ZAW

Step 1: Close Outlook program and create backup of PST file
Step 2: Now run SCANPST.EXE on copy of your PST and repair
SCANPST.EXE is found in these locations according to different Outlook versions:
In MS Outlook 2002/XP: C:\Program Files\Common Files\System\MAPI\ \scanpst.exe
In MS Outlook 2000:C:\Program Files\Common Files\System\MAPI\ \NT\scanpst.exe
In MS Outlook 97/98:C:\Program Files\Common Files\Windows Messaging\scanpst.exe
Note: Do not use backup option in SCANPST.EXE as you working with a duplicate copy of PST
file.
Step 3: Then open the command prompt by clicking Start >> Run
Step 4: Paste or type the file path to PST19UP and your PST name: PSTUPG19.EXE-filename.pst
and press Enter.
Step 5: The command line will resemble: “C:\My Documents\pst19upg.exe”- Outlook.pst.
Step 6: A new copy of the PST file will be created, which is called “filename.psx”.
Step 7: Once you have completed, rename the original PST file.
Step 8: Now at the Command Prompt, type “pst19upg.exe- filename.psx” and press Enter
Step 9: A new password-free PST file will be created from PSX file.
Step 10: Now open your MS Outlook program and open the PST file.

Why does Outlook keep prompting for password

We have seen our community members ask questions about Outlook keeps prompting for credentials many times. This issue could be caused by numerous reasons. Below is a list of the most common reasons for this problem:
Outlook is configured to prompt you for credentials
Incorrect password cached in credential storage
Required Authentication Settings for outgoing server and incoming server
Outlook Anywhere is not configured to use NTLM Authentication
Corrupt Outlook profile
Slow or unstable network connection
Antivirus programs
Shared calendars
Outlook is configured to prompt you for credentials
If you are using an Exchange account, there is a setting in your Outlook profile to always prompt for logon credentials. To find the setting, please follow:
1. In Outlook 213, go to File tab > Info >
Account Settings > Account Settings…
2. Highlight your Exchange account and click Change button.
3. Click on More Settings button.
4. Select the Security tab.
5. Under the User Identification, make sure the “Always prompt for logon credentials” option is not selected.
If you are using other types of email, please make sure you have ticked the option “Remember password”.
Incorrect credential cached in Credential Manager
Your Windows system stores user credentials on your computer. If the cached credentials are incorrect, you will be prompted for password. This issue usually happens after the password for your domain user account is changed. Before your password changed,
you saved your credentials. The stored credentials are not overwritten when Outlook triggers the authentication prompt even if you enable the Remember my credentials option.
To fix this issue, you need to remove the corrupted credentials, follow these steps:
Click Start, click Control Panel, and then click Credential Manager.
Note If View by is set to Category, click User Accounts first, and then click Credential Manager.
Locate the set of credentials that has Outlook in the name.
Click the name to expand the set of credentials, and then click Remove from Vault.
Repeat step 3 for any additional sets of credentials that have the word Outlook in the name.
Required Authentication Settings for outgoing server and incoming server
Different email provider may need different authentication settings. Please make sure you have set the server settings correctly. You can contact your email provider to gather the information.
In general, we select the “My outgoing server (SMTP) requires authentication” option and the first bullet “Use same settings as my incoming mail server”.
In addition, click on the Advanced tab and check if you have enter the correct Server Port Number and select the correct encrypt type. Below is a screenshot for an IMAP account:
Outlook Anywhere is not configured to use NTLM Authentication
The Outlook Anywhere feature allows you to access your Exchange account remotely from the Internet when you are working outside your organization's firewall.
When using Outlook Anywhere to connect to your Exchange server, we need to choose
the authentication method among Basic Authentication, NTLM Authentication and Negotiate Authentication. The difference among them is the way that the passwords are sent when connecting to the server. With Basic Authentication,
the password is sent in clear text. Using NTLM Authenticationcan significantly reduce the number of password prompts.
To check the authentication setting, please go to File > Account Settings > Account Settings,
select the Exchange account, and then click
Change. In the Change Account wizard, click
More Settings, and then click the Connection tab. Click the Exchange Proxy Settings button and now, you can see the settings under
Proxy authentication settings. Try to change the authentication to
NTLM Authentication and then check the issue again.
Slow or unstable network connection
If your network connection is slow or unstable, Outlook may lose connection to the mail server. When Outlook try to reconnect, it will prompt for the credentials. To verify this, please switch to a stable network environment and then check if this issue
persists.
Corrupt Outlook Profile
Corrupt profile may cause Outlook to no longer remember your password. Please try to create a new mail profile in Control Panel and reconfigure your email account in the new profile to fix the issue. To create a new mail profile, you can refer:
http://support.microsoft.com/kb/829918
Antivirus software
Antivirus software usually integrates into your Outlook and it may cause some conflicts. Try to temporarily turn off your antivirus software to check if the issue will be gone.
Shared Calendar
Shared calendars can impact the user credentials, this issue may also occur if you have shared calendars opened in Outlook. You can try to unselect the shared calendar to check the result. It’s recommended to not open the shared calendar unless you want
to view them.
If you have any comments, welcome to post in the forum. Thank you.
Please click to vote if the post helps you. This can be beneficial to other community members reading the thread.

Nope...
I went through point by point by point, top to bottom, checking and verifying every single item as a possible cause for why my system (Outlook 2013 running on Windows 8.1 and connecting to Exchange 2010) insists on prompting me for my password every single
time I start Outlook. None of the solutions worked, my system still prompts me. I don't even have to supply a password. When the prompt dialog appears, I just cancel it. Within a few seconds, the bottom Outlook status bar changes to
"Need Password" with a key icon to the left. Then I just click on that message and immediately Outlook connects to Exchange.
The freaking software is BROKEN! Period.

Micrsoft Outlook somtimes prompting for username and password

hello All ,
I Have Exchange 2010 sp3 installed two mailbox servers & two HUB & CAS Servers and Outlook sometimes prompting for username and password .
how can fix it .
Thank you

Hi,
Please check the following points:
1. Does the issue happen to your external users or internal users?
2. For all users or some specific users?
If the issue happens to internal users, please configure the authentication in Outlook Security tab with Negotiate Authentication to have a try.
Thanks,
Winnie Liang
TechNet Community Support

Internally installed Outlook 2010 prompts for password using external smtp email as user id

Hi,
After exchange 2007 to exchange 2013 migration all internally connected outlooks 2010 (xp, vista, win7, win8) prompt for password using external email user address as user id.
Below some of my settings and informations.
Internal domain: contoso.local
External domain: contoso.com
Exchange is NOT published to Internet at all.
Internally OWA, ECP runs OK.
Test-OutlookWebservices with user.name(at)contoso.local or contoso\user.name - runs OK
Test-OutlookWebservices with user.name(at)contoso.com - fails
Common scenario - (all happens internally):
1.User starts Outlook
2.Outlook prompts for password with default user.name(at)contoso.com as id
- while user tries to authenticate using his domain password - outlook re-prompts
- while user changes id from user.name(at)contoso.com to user.name(at)contoso.local or contoso\user.name and authenticates - Outlook connets to exchange and till next Outlook it runs ok.
I am bus with that issue since 1 week and I am already bit tired. I was looking for answer via gogle/bing and went through tons of "Outlook perpetually prompts for password" threads and blogs. No success.
Do you have any clue where else start to play with that?

Hi,
Thank you for answer - no luck
>NExt og to Connection tab - Exchange Proxy settings - Proxy authentication settings - is it set
>to NTLM or Basic?Give it a try on one of them.(if set to NTLM change to basic and vise versa).
On both settings the same results - Outlook is prompting for password.
>Another thing you could try is og to Internet Explorer - tool -internet options- Security - click local
>intranet - >custom Level and scroll Down to bottom and put check mark on automaticly logon
>With current username >and password.
>Do this on Trusted sites as well,if Your domain is listed under trusted sites
The same results - Outlook isprompting for password.
Should not be some kind of mapping set somehow in AD between user.name(at)contoso.com and user.name(at)contoso.local?
I have impresion that issue is somewhere in the fact that outlook is trying to connect using contoso.com instead of contoso.local in ntlm credentials.

Outlook Password Prompts events

Few mailboxes (not many) where reported with outlook password prompt and I'm trying find events related to outlook password prompts..
Need help on, where to find the event logs related to outlook password prompt.. Do I need to configure any perform or new captures to captures those events ?

Hi,
I'n my experience this can be cause by additional mailboxes mapped to the account.
On the client that is experience the password prompt, right click on the Outlook icon in the bottom right while holding shift. Then select Connection status. You should be able to see the connections to the exchange.
Check is there is any connection that is in the state connecting when you get the password prompt. The Type will tell you what kind of connection this is and if it's an additional mailbox or mapping.
When a user has full permissions to an mailbox it is automatically mapped to the user.
You can disable this if wanted.
http://technet.microsoft.com/en-us/library/hh529943(v=exchg.141).aspx
or simply edit the attribute on the users account
\Mattias
http//blog.gsec.se

Best practice for linking fields from multiple entity objects

I am currently transitioning from PHP to ADF. I'm looking for the best practice for linking data from multiple entity objects.
Example:
EO 'REQUESTS' has fields: req_id, name, dt, his_stat_id, her_stat_id
EO 'STATUSES' has fields: stat_id, short_txt_descr
'REQUESTS' is linked to EO 'STATUSES' on: STATUSES.stat_id = REQUESTS.his_status_id
'REQUESTS' is also linked to EO 'STATUSES' on: STATUSES.stat_id = REQUESTS.her_status_id
REQUESTS.his_status_id is independent of REQUESTS.her_status_id
When I create a VO for REQUESTS, I want to display: REQUESTS.name, REQUESTS.dt, STATUSES.short_txt_descr (for his_stat_id), STATUS.short_txt_descr (for her_stat_id)
What is the best practice for accomplishing this? It appears I could do it a few different ways:
1. Create the REQUESTS VO with a LOV for his_stat_id and her_stat_id
2. Create the REQUESTS VO with the join to STATUSES performed within the query for the VO. This would require joining on the STATUSES EO twice (his_stat_id, her_stat_id)
3. I just started reading about View Links - would that somehow do what I'm looking for?
I also need to be able to update his_status_id and her_status_id through the by selecting a STATUSES.short_txt_descr from a dropdown.
Any suggestions on how to approach such a stupidly simple task?
Using jDeveloper 11.1.2.2.0 if that makes a difference in the solution.
Thanks ahead of time,
CJ

CJ,
I vote for solution 1 as it's just your use case. As you said you what to update the his_status_id and her_status_id through the by selecting a STATUSES.short_txt_descr by a drop down. This is exactly the LOV solution.
ViewLinks are used fro master detail navigation (which you don't do here) and Joining the data make it difficult to update (and you still need a LOV for the drop down box.
Timo

Not recieveing email from certain domains

Hi,
I am having trouble getting to the bottom of an issue which I have had for a couple of weeks now.
We are unable to receive email from certain domains. The big problem is our sister company no one on there domain is unable to send to any party on our domain, this has only just started happening this morning, however email delivery form other domains has
been problematic for about two weeks now. We are receiving plenty of email form other parties still.
Our sister company is not getting any bounce backs and I have checked the message tracking within Exchange 2008 and I am unable to see any email come in at all from our sister company.
It is worth mentioning that the host of our domain is having a number of issues with "Nameserver" when I check on intodns.com and I'm not to sure if this is the problem or not, however we are currently in the process of transferring away form
them and setup with the same host as our sister company. The transfer hasn't happened yet as our current host hasn't released the tags.
Has anyone got any ideas that can help please??

What's the path from the sister company to your company?
Is it direct? Or does incoming email first transit through some online spam filtering service (like Postini).
Can the sister company connect using telnet?
Here's some very detailed directions:
http://www.port25.com/how-to-check-an-smtp-connection-with-a-manual-telnet-session-2/
And more concise:
http://exchange.mvps.org/smtp_frames.htm
Please mark as helpful if you find my contribution useful or as an answer if it does answer your question. That will encourage me - and others - to take time out to help you.

Outlook 2010 prompting for password each login to Exchange 2013

We have a new member server w/ Windows Server 2012 and Exchange 2013. User's mailboxes were migrated from an old Windows Server 2003 server w/ Exchange 2003 by creating new empty mailboxes in Exchange 2013 then we exported/imported
.pst files instead of migrating exchange stores. Every time any users opens Outlook, they are being prompted to log in with domain credentials. Obviously I'm clicking on "Remember my password", too. The workstations are all
using Outlook 2010 and on a mix of Windows XP SP3, Windows 7 SP1 and Windows Server 2008 R2 (terminal server with Outlook 2010 installed for remote users). Some users were using Outlook 2010 prior to the migration to Exchange 2013 and some were on Outlook
2007 but upgraded to Outlook 2010. I'm almost to the point of telling the users it's a new "feature" of Exchange 2013. I'm confident that it's not stored passwords or credentials on the workstations, I've removed, deleted, created and
recreated those credentials. I've changed domain passwords and that didn't help either. Any hints, tips or suggestions would be greatly appreciated.

Hi
These settings can be found under your Outlook profile, "More Settings > Connection > Exchange Proxy Settings."
If you have Outlook Anywhere enabled, then you should force all Outlook clients to use HTTP when connecting. Ensure you have "On fast networks, connect using HTTP..." AND "On slow networks, connect using HTTP...". If you
don't, anytime you dock, undock, get a new IP address, refresh your IP address, go to sleep, idle, anything that causes your IP stack wants to renegotiate connective will cause a password prompt to appear, EVERYTIME.
Terence Yu
TechNet Community Support

Outlook continually prompting for username and password

Good Day ,
I finished migration from exchange 2003 to exchange 2010 and all users are working fine but just few outlook user got problem prompte username and password . have an idea why ? I will be thankful if you can help me
Regards
e

Hey zikorai,
looking this url:
http://www.dslreports.com/forum/r24512375-Outlook-2007-Exchange-2010-prompting-for-usernamepassword
Please Mark This As Answer if it helps to solve the issue
Tzuri Ben Ezra | My Certifications:
CompTIA A+ ,Microsoft MCP, MCTS, MCSA, MCITP
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Outlook 2010 prompting for password

Hi everybody. I ran into an issue yesterday morning where at one of our sites Outlook 2010 has started prompting for a username and password. If the user types in their username as "MYDOMAIN\myuser" and their password, it lets them in but the Exchange
status shows as "Disconnected". If the user sets their username to just "myuser" without the domain on the front it lets them in and works as expected until they close Outlook, at which point they have to enter their credentials again.
The strangest thing about this is that it's only affecting one of our sites and only Outlook 2010. Users running 2007 and 2003 do not have the problem and only users at this physical location have the problem. Does anybody know where I can look? I have tried
clearing stored credentials, created new Outlook profiles and reset passwords. None of these things seem to have had any effect.

After changing a ton of outlook settings, deleting the user's account profile on outlook, deleting their domain profile from the effected computer, trying to fix the registry, deleting stored credentials, etc.... almost everything else I found something
that FINALLY worked for me after over a year and about 12 different users being effected.
in the past I would just give up after much frustration and upgrade them to Office 2013 but that gets very expensive especially when I have 57 other users that could potentially run into the same issue.
Here is what I did.
- back up the user's data. log out and log into local admin
- delete the user from the local registry
- repair Office 2010 through control panel/programs, restart
- have user log back in with their credentials to make new local profile. recover their backed up documents. log out and log back in as local admin.
- install hotfix KB2597011
- restart computer
- install hotfix KB2583935
-restart computer
- log in, open outlook and setup user's account.
Some of these steps may be skipped as I didn't find the hot-fixes until after I repaired office, however I am just providing what I did in the process to end up with a working outlook again.
Some things unique to my situation that may or may not help.
- I noticed some of the computers have Office2010 32bit installed on 64 bit machines.
- Some of the users were swapped over using a profile mover program when we moved to a domain environment.
- For me this always happens when the user's passwords expire and they have to log in to the portal to change it. Then outlook starts with the repeated prompt for passwords. It is always computer specific and nothing but what I provided above has worked
other than re installing windows 7 and then office or upgrading to office 2013.

Outlook 2013 Auto Account Setup for Linked Mailbox Not working

We've created a linked mailbox, in Exchange 2013 (in domain1), for a user in another AD forest, domain2. We have the AutoDiscover service configured in the other AD forest as well. Our only issue now is trying to find a way to get the Outlook Auto Account
Setup to automagically configure a user's profile the first time Outlook 2013 is started. If we type in the user's email address and name and click Next, the profile is created successfully.
I spoke to Microsoft support who helped me confirm that AutoDiscovery was configured correctly in the other forest. Reading this information (
https://technet.microsoft.com/en-us/library/bb124251.aspx ) on AutoDiscover, I found what may be the issue. It notes that
"If the Outlook client is joined to a domain, the user's domain account is used."
Since the linked mailbox is associated with domain1, Outlook looks like it cannot use the domain account from domain2. I wonder if there might be a registry hack to bypass this and force Outlook clients in domain2 to look at email addresses in domain1?
Orange County District Attorney

Hi,
According to your description, I noticed that “If we type in the user's email address and name and click Next, the profile is created successfully”. Do you mean the linked mailbox can be setup automatically when you fill in the Name and E-mail Address in
the Auto Account Setup page? For example:
If that is the case, the autodiscover service in Exchange side should be configured correctly and it is working for Outlook client automatically account setup.
If the account can’t be setup automatically when using autodiscover service, please
verify that the Master Account (Domain2\User1) has full access to the Linked Mailbox ([email protected]) as well as the smtp address using the cmdlets Get-Mailbox and Get-MailboxPermission in Exchange server:
Get-Mailbox [email protected] | fl PrimarySmtpAddress,*Type*,*Link*
Get-MailboxPermission [email protected] | fl
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]
Winnie Liang
TechNet Community Support

Outlook 2010 users getting Password Prompt until shared mailboxes are removed

Hi,
some (around 20) of my 3000 outlook 2010 users are getting Password Promts while using outlook.
This started end of last week without any change to the environment.
The prompt goes away if we unmount and remount additional mailboxes they have mounted.
Any idea what could be causing this or where to start debugging?
Backend is Exchange 2013 and 2007 in migration.
Thanks for every idea

Hi,
How did you mount additional mailboxes? Via File > Account Settings > Account Settings > Double-click the Exchange account > More Settings > Advanced tab > Add?
Are the additional mailboxes hosted on the same version of Exchange server with thoese mailboxes with the password prompting issue? If this is the case, this issue often happens if you have a hybrid deployment of Exchange Server. To resolve the issue,
please have a look at the following KB article and follow the instructions to fix it:
https://support.microsoft.com/kb/2834139?wa=wsignin1.0
Please let me know the result.
Reagrds,
Steve Fan
TechNet Community Support
It's recommended to download and install
Configuration Analyzer Tool (OffCAT), which is developed by Microsoft Support teams. Once the tool is installed, you can run it at any time to scan for hundreds of known issues in Office
programs.

Outlook keeps prompting for password

This is a weird situation. User logs in to domain without issues and is able to access outlook. However, during the middle of the day, outlook keeps prompting user for authentication or password.
Profile has been re-created. ESSO cache was cleared, but still the same thing. Created separate email profile for other email accounts she access, but same issue still occurs.
Has anyone seen this issue and what resolution have you used.

Truly I don't mean to disparage your comment/proposed answer, but in today's day and age one should really never, ever use "Remember my Password" for any context. This means web forms even on trusted sites and/or when the windows subsystem
is called to prompt you for your Windows Password.
This is a very bad practice for two reasons:
The first is due to Heartbleed and/or the like-wise thousands of malware that are constantly attempting to hijack your username/password entry. Please understand that when you ask systems to remember your password what is happening on the backend.
That password is being saved somewhere, or a cookie is being set. The only "safe" way to remember your password is in your head.
The second is due to account lockouts. If you routinely use "Remember my Password", especially across several computers (home, work) and devices (ActiveSync on iPhone/iPad, etc.) then you are a prime candidate for getting a locked out domain account.
We, in IT, won't like you very much after that :) Please understand that when you choose that option, those features do not remember to update all those places you have saved when you reset your password (every 90, 120 days, whatever your organization's
password policy dictates). As soon as you do, you will begin to lock out all sorts of applications and/or your domain account.
As I said above, the only "safe" place for you to store your password is in your brain. Now this gets difficult over time because you also don't want to use the same password over and over again for different places. Because when you
do get compromised (and I do mean when, not "if") that hacker will not only have your password, but also will know where all you have used it. And the first place they will go is your online Bank, Savings, online stock, etc... If
you don't routinely rotate your passwords, and use different ones then you may just as well hand over the keys to your house.
Use a format like "for every letter O, I will use a zero", "I will use a 3 for the letter E" or "instead of the letter S, I will use a 5", then pick something only you would remember, like "that trip to Puerto Rico
was memorable"... so your new password would be Pu3rt0 5ic0. Throwing in a space helps combat robot hacking. Now this is slightly bad too though because they are dictionary or common words. Then keep on that theme and think up a few
more passwords that you will remember, AirPlan3 Tix, 5andy B3ach3s! <-- and if/when they require special chars, throw a "bang" or "exclamation mark" on there.
If this seems a huge imposition (my gut would tell you to get over it, but in IT, hey we try to help too!) ask your Systems Admins/Architects to implement a Federation provider (like OKTA or OneLogin, or ADFS - probably least preferable). Then they
can setup the multitude of hosted service providers (think "cloud applications" though I hate that word) for either SAML based Single Sign On, or leverage that service's proprietary "Password Safe" aka "Secure Web Authentication".
Or lastly, for yourself you can go download KeePass. This is a "wallet" style application that you can lock away all your passwords; though you will need to remember to update them in KeePass as you then may reset them. Single Sign On
is always more preferential because they will typically use your Domain credentials (i.e., Kerberos authentication local to your Org's domain) as part of the solution.

Outlook Password prompt for Linked Mailboxes from certain Domain

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