Outlook 2010 keeps prompting for password

Hi,
We use Exchange 2008 and Outlook 2010. For some reason, Outlook 2010 keeps prompting for password. My use entered the password and checked "Remember Password" box, but next morning when he logged in, he still got the prompt.
I removed the Outlook credential for Outlook listed under Password Credential in Control Panel, but still no help.
Please advise!
Thanks in advance!
Grace

Hi Grace
1. Open Outlook 2010. Click File>Account Settings>Account Settings.
2. Click the E-mail tab, click the Exchange Online mailbox, click Change…
3. Click More Settings…. Click the Security tab, make sure the Always prompt for logon credentials box is unchecked.
Please mark it answer if it helps you solving your problem
Amit Kotha

Similar Messages

Outlook 2010 keeps prompting for password every morning

Hi,
We run Exchange 2007 on Windows server 2008. All SP and updates are up to date.
About a month ago, two users got prompt for user credential in Outlook every morning, but other users in the domain are fine. Below are what I have tried but no help.
1. Deleted user credential for Outlook in Credential Manager
2. Recreated Outlook profile
3. Disjoin and rejoin their computers to the domain
I can repeat the problem on another computer with the user's account log in.
The problem only happens in the morning, once the user entered the credential, Outlook starts to update new email and it will be fine for the rest of the day.
Only two users have this problem. I can't figure out if they have anything in common. Since I can repeat the problem on another computer, I assume this problem should be related to user account.
I need help!
Thanks in advance!
Grace

Hi,
As per the information and details provided by you, to solve the Outlook 2010 password problem, please follow these steps: -
Firstly, you try to
change the profile.
Open Control panel/Mail/Select the profile and click Properties.
Select the mailbox and click the
Change button.
When inside the profile you will see tabs at top for
connection and security.
Please make sure you have selected
Negotiate authentication, and have unchecked the box that states
Always prompt for login credentials.
Then check if you are using
HTTP to connect with exchange, if so uncheck this and apply the changes.
Close Outlook if open and reopen Outlook.
I hope this information will be helpful for you.
Thanks and regards
Shweta@G
Hi Goyal,
Thank you very much for your reply. The Outlook settings are the same as you described. We do use HTTP to connect to Exchange. I unchecked it and see what happens tomorrow. but just FYI. All Outlook has the same settings with HTTP connection checked. Only
two specific accounts have the credential issue.
Will update you tomorrow.
Thanks,
Grace

Outlook 2010 keeps prompting for credentials

Hello,
I have just about every user experiencing an issue with Outlook 2010 where Outlook keeps prompting for credentials. This has been happening ever since recent Microsoft Office updates that rolled out last week it seems. All my users still have connection
to the exchange server and can send/reply just fine. Issue occurs on both 32 bit and 64bit versions. This prompt will appear every few seconds and is becoming a nuisance for all my users.
I have attempted the following with no resolution:
- removed credentials from credentials manager
- ran Outlook in safe mode
- ran repairs on Office
- completely removed and re-added users Outlook profile (profiles are manually configured)
- made sure Office is up to date
- configured Outlook account on freshly imaged PC

Hi,
For this issue, you can first try some suggestions in this forum content:
Why does Outlook keep prompting for password
Especially try NTLM Authentication to check the result.
We have received some report about this issue since the February 10, 2015 update for Outlook 2010 (KB2956128). If you have installed this update, please note we have realized this issue and once there is any update, I'll let you know.
Regards,
Melon Chen
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 2010 - new prompting for password

After installing Office 2010 Beta and working fine for about a month and a half, Outlook started prompting for a password. The machine is on the domain so the Outlook did not prompt before. If you cancel the prompt, everything seems to work fine. This happens on both Windows 7 64-bit and Windows XP. It started happening to all known users on Office 2010. The problem started on January 8, 2010.

I have searched all over for a solution to this crazy problem and some of them highly technical and poorly explained and were for outlook 2003 and 2007. Finally I found this less than 2 minute fix that works. http://www.howtogeek.com/howto/windows-vista/fix-for-outlook-2007-constantly-asking-for-password-on-vista/
This is not my fix but glad to pass along something that actually works. Give Kudos to the "how-to-Geek" and post in other forums to help out all your frustrated friends.
1. Close outlook!
2. go to my computer and then paste this into the address bar. %userprofile%\AppData\Roaming\Microsoft\Protect
3. rename the very long file name S-1-5......etc by appending "-old" to the end of the existing file.
4. now re-open outlook and you may be request for your password. If so enter it and check the remember password box
5. now go back to %userprofile%\AppData\Roaming\Microsoft\Protect by searching in windows explorer or my computer and you should see the renamed long named file
and a brand new long named file.
This should work for you. If not, then do a shut down and reboot a time or two. Then try reopening outlook 2010 and your problem should be fixed. Save
this link: http://www.howtogeek.com/howto/windows-vista/fix-for-outlook-2007-constantly-asking-for-password-on-vista/
because this problem is likely to recur sporadically because of microsofts pushed updates that cause more problems than they solve. Turn off automatic updates so MS cannot keep screwing up your system and snooping.
This fix was explicit for Vista but worked fine for me on Windows 7 64 bit running outlook 2010. Post your results to see if it works for others please. I know everyone is tired of chasing their tails on this problem and even posted fixes have
been so vague that you need to be a software engineer to follow them. If you have other fixes for this I know everyone would appreciate people posting all the steps from the beginning to end and assume that we know nothing at all. Post all the
paths and explanations in simple terms please.
I hope this helps.
Rick Nelson

Outlook 2010 randomly asking for password

I know this is a frequent complaint, but I have not found a viable solution to stop this problem.
I am using Outlook 2010 on Windows 8.1 (with all the latest updates)
About a month ago, Outlook started to randomly ask for the username and password on two of my accounts.
I have tried all the solutions that I could find, but none work.
I have 3 accounts set up, 1 for me on a POP account with Verizon, a 2nd for my wife also with Verizon, and a 3rd is an IMAP for work.
I do not have a problem with the work account, but the 2 POP accounts randomly ask for the username/password and by the time I press OK will fail. Sometimes the scheduled send/receive works fine.
There were no credentials set up for these accounts (I have tried adding it and later removed it since it did not help)
I have tried removing the profile and readding as well as removing and adding the accounts again (using the same .pst files), losing my calendar in the process by the way.
If I manually initiate the send/receive, it usually works fine (I may have seen it ask for the PW once or twice)
The usernames and passwords are set up correctly and all the right boxes are checked.
I even set up groups so that the 3 accounts are scheduled at different intervals and the IMAP account only receives mail from the inbox without checking subscriptions and sends.
Any help would be appreciated,
Ken

Hi Ken,
Have you ever tried to clean the credential history cached in Windows Credential Manager? Sometimes incorrect credential cached in Credential Manager will result in this kind of issues:
Go to Control Panel, 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.
For more steps to troubleshoot this kind of issue, you can refer to this ForumFAQ thread:
https://social.technet.microsoft.com/Forums/en-US/bcd2d9c2-1a1b-4446-bf32-69fee8cdf11b/why-does-outlook-keep-prompting-for-password?forum=outlook
Hope this helps.
Regards,
Ethan Hua
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 2013 keep asking for password

Hi,
We having problem where outlook is keep asking for password every time you start outlook.
Things I tried
- I have created new outlook profile - still same problem
- Clear all passwords from password manager - still same problem
- Deleted the .OST file - still same problem.
- Always prompt for logon credentials - this is not tick
- I have tried this
http://support.microsoft.com/kb/290684
Only happening on Office 2013 not office 2007
One thing I did notices when I was debugging the problem.
When I removed the office and reinstalled the problem went away for
whole 1 week but then on Monday it start asking for password again which
makes be thing that they is something in group policy which is causing
this.
We are using
- Windows 7
- Office 365 (2013)
- Our emails are being hosted by Microsoft clod
I don't know what else to try or check.

Hi,
Does this issue happen to all clients or a special one?
Please first check if Logon network security under More Settings on the Microsoft Exchange
Security tab is set to a value other than Anonymous Authentication.
In addition, you may also follow this article to troubleshoot the issue:
http://blog.quitecloudy.com/2012/06/troubleshooting-office-365-multiple.html
Please Note: Since the web site is not hosted
by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.
Regards,
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 2007 Clients Prompt For Password When Opening

I am running Exchange 2007 Standard. New outlook 07 clients prompt for password each time it is opened. Older clients do not prompt for password. Is there any way for outlook 07 to not prompt for password? Users already logged into domain, should their credentials not be recognized automatically like with outlook 03?

This fixed it for me.
http://social.technet.microsoft.com/Forums/en-US/exchangesvrgeneral/thread/383d130e-869f-4fce-9502-8b340904b0ba/#636c5a5e-c61f-414b-8e85-562c888b83cc
Quote:
Same problem here after restarting SBS 2008 for upgrades (annoying login box popping up after starting Outlook and also other times).
This solved the problem for me:
IIS Mgr on SBS 2008 / - / SBS Web Applications /
- SSL Settings / Client certificates - Stop / Start web server after changing settings:
Autodiscover: Ignore
EWS: Ignore
OAB: Accept *)
owa: Accept *)
Rpc: Accept *)
RpcWithCert: Accept *)
*) All these have to be Accept to get rid of login box
Best regards
Bjorn
I was having the same issue. SBS2008, Exchange 2007. Only being prompted in Outlook 2007 clients. Tried a lot of different things to fix it, but none worked. This started happening after a round of security updates but I could not find KB2412171 on the list.

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.

Mac OS X server keeps prompting for passwords on all devices.

Hi,
I'm running an Mac OS X Server (10.6.8) with iCal, Address Book and Mail enabled. My issue is that the clients (iCal and Calendar in iOS) keeps asking for passwords on strange intervals, and it usually results in it not accepting the right password until you restart the client. It can run smoothly for days and some times it just goes completely bananas. It makes no difference if its a regular user or a Open Directory user.
This happens to all the services mentioned above but iCal is the worst.

Wait do you mean you are running 10.6.7 server right?
When did you upgrade to this version? Was it ok before the upgrade?

Outlook 2013 repeatedly prompts for password when connecting to Exchange Server 2010

I am trying to configure Outlook 2013 on a Windows 8.1 Pro client. The exchange server is 2010 SP1 and works just fine with OL 2010.
When I configure OL 2013, the configuration prompts for a password for the account repeatedly with both NTLM and Basic Authentication chosen. OL 2013 tries to connect and then it disconnects with the password for the account repeatedly prompted. When
the credentials are entered, the prompt reappears immediately.
Might anyone help?
Many thanks in advance
Shuvo

Hi Shuvo,
Please check whether this user can access mailbox in OWA. Please manual setup this account in Control Panel to have a try. Make sure your
Server name and User name are configured correctly. If you are configure the account in internal domain environment, please click
More Settings, set Negotiate Authentication in
Security tab and uncheck Connect to Microsoft Exchange using HTTP in Connection tab.
If there is any updates, please feel free to let us know.
Thanks,
Winnie Liang
TechNet Community Support

Outlook 2013 / Exchange 2010 constantly prompting for password

I as well as many users keep getting prompted for User/pass in outlook. This usually happens when I go from LAN to WIFI or from office to home. For example, If I close my laptop (not shut down) and head home then log back in and connect to my
VPN I usually get prompted for my user/pass for outlook. I type the correct user/pass but it does not accept and immeadiatly prompts for me to re enter. If I close down Outlook and re open the issue is fixed however this is not fixing this issue
and the owner of the company is receiving this error as well. I would like to find a solution so that either it does not prompt and automatically updates once it is reconnected with the network via VPN.
Any suggestions?
Thank you

I as well as many users keep getting prompted for User/pass in outlook. This usually happens when I go from LAN to WIFI or from office to home. For example, If I close my laptop (not shut down) and head home then log back in and connect to my
VPN I usually get prompted for my user/pass for outlook. I type the correct user/pass but it does not accept and immeadiatly prompts for me to re enter. If I close down Outlook and re open the issue is fixed however this is not fixing this issue
and the owner of the company is receiving this error as well. I would like to find a solution so that either it does not prompt and automatically updates once it is reconnected with the network via VPN.
Any suggestions?
Thank you
Outlook is simply not good at that with the existing protocols in Exchange 2010. Exchange 2013 uses MAPI over HTTP which may make that experience better.
Switching networks with Outlook open is typically not a good user experience.
Twitter!: Please Note: My Posts are provided “AS IS” without warranty of any kind, either expressed or implied.

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.

Exchange 2013/2010 Co-existance Outlook Users Always Prompted for Password

Hello,
We are in the process of attempting to migrate to Exchange 2013, but during the migration time, we need to coexist with the two versions. Our outlook clients are a mix of Office 2007, 2010, and 2013. When a user is migrated from 2010 to 2013,
they start getting prompted for their password in Outlook every few minutes. They can click cancel and continue working, but they continue to get prompts for their password. If they click the update folder button in outlook, it updates fine, and
the password prompt goes away for awhile.
Most topics on this state that this is caused by a certificate issue. We have an internally deployed CA, with the Root certificate trusted by all clients. The exchange 2013 server has a certificate that was created by this CA.
I believe that this is caused by OAB (address book) still being hosted on the Exchange 2010 server (with a self signed cert), that is causing the connection to fail. Is there anyway to test this without breaking outlook connections for the users that
are on Exchange 2010? Or is there any other reason that this would occur?
Thanks for any assistance.

Sorry for taking so long to reply, other items came up that rank higher then this migration.
I ran the Test-OutlookWebServices CMD and got this result:
[PS] C:\Windows\system32> Test-OutlookWebServices
Source                              ServiceEndpoint
Scenario                       Result Latency
(MS)
EXCHANGE13.company.local           exchange10.company.local           Autodiscover: Outlook Provider Failure     229
EXCHANGE13.company.local
Exchange Web Services          Skipped       0
EXCHANGE13.company.local
Availability Service           Skipped       0
EXCHANGE13.company.local
Offline Address Book           Skipped       0
I
am currently thinking that this may be the error. Is there a way to
change the first failing result to the hostname of the
exchange13.company.local without breaking the current settings for the
exchange10.company.local autodiscover?

Outlook 2007 keeps prompting for credentials

I've seen so many articles on this and it still plagues me. I've had enough.
I am in a pure Exchange 2007 environment.
SCC Mailbox Server
Hub & CAS are on a different Server but together.
Outlook 2007 is installed on my workstation.
I setup a profile using the auto-discover process (default) and I am prompted for a passwrod to my hub and CAS? I enter in the CORRECT credentials and I am prompted again. Remembering months ago that I was unable (or unwilling) to resolve this annoyance I hit cancel and chose to set it up manually. this worked using the Exchange Clustered Mailbox name.
As soon as the profile is setup and I am into Outlook I'm prompted again! wow, what is this? I enter in the CORRECT credentials AGAIN and i am repeatedly prompted. after hitting cancel 30 times i continue on with my work.
..but then I close and re-open Outlook, same process all over again. the Windows prompt is prompting me for creds on domain.com (my domain) what is going on here. i have not even had a chance to configure (break) anything....is this default behaviour for exchange 2007/Outlook 2007? I know I am missing something here but I just can't seem to get around this.
I have tried most MS KB articles out there (can't find the links to provide)
Yes, I'm on the Domain
Yes, I have decided to set it up manually and chose not to use Auto-discover, which to me at this point is a terrible feature.
Yes, my bottom right corner of Outlook 2007 says "Online with Microsoft Exchange"
Outlook 2003 clients do not have this problem which tells me this is something in Outlook. I can uninstall Outlook 2007 and replace it with Outlook 2003, same workstation, same user logged in with no problems.
Whats going on here?
thanks

i solve this problem with this
Kernel authentication Mode
If you have all the above configured and you are still experiencing problems then the following procedure will more than likely fix it for you. It has been working a lot for me lately and also for people asking questions on Experts
Exchange.
In Internet Information Services (IIS) Manager locate the Exchange virtual directories, if you are using Small Business Server 2008 these will be under the SBS Web Applications website, if your not using SBS then they will be under
the Default Website.
The virtual Directories you are looking for are:
Autodiscover
EWS
RPC
OAB
In turn highlight each of these virtual directories and double click the Authentication icon on the right hand side. Right click on Windows Authentication and select Advanced Settings. Place a check box in the box for Enable kernel-mode
authentication. Do this for each virtual directory listed above.
http://demazter.wordpress.com/2010/02/09/outlook-continually-prompting-for-username-and-password-2/

Outlook 2010 keeps asking for credentials

Hello,
We have a Exchange 2013 server with outlook 2010 clients wich constanly ask for credentials.
even with the option save credentials on.
The Exchange servers are hosted and the clients are not part of a domain and use Outlook Anywhere.
Outlook 2013 clients do not have this problem.
I tried several things:
-new profile
-rename ProtectSystemProider folder
- dword registry Savecredentials
- removed ProtectSystemProvider registry key
- Removed or edited credential manager accounts
We have this problem on serveral Windows 7 clients and Remote Desktop Server 2008 r2 sessions.
Hope anyone can help me.
gr
Cris

Hi Cris,
Please try to clean up the cached credential in your computer. Then fill in with the format of UPN when it prompted for credentials next time and check the Remember my credential to save it. About how to remove cached credentials, please follow these steps:
1. Launch the Credential Manager from Control Panel > All Control Panel Items > Credential Manager.
2. In the Generic Credentials section you’ll see a setting for [MS Outlook] which will include your SSO details. Click the downward-pointing arrow to the right of that value.
3. In the expand details, click Remove from vault. Then Outlook will no longer have a stored copy of your password.
Regards,
Winnie Liang
TechNet Community Support

Outlook 2010 keeps prompting for password

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