I know this question has been asked before but I looked through these and I still have not been able to fix this. I have a client with 3 users. All users have been working fine for a long time. Now one of the users keeps getting a prompt for the password. The system is attached to Exchange. I have the following list I checked through:
•Outlook is configured to prompt you for credentials - Checked and it is not set to prompt.
•Incorrect password cached in credential storage - checked and verified password through OWA, all is correct.
•Required Authentication Settings for outgoing server and incoming server - It is an Exchange server so it gets its info through autodiscover.
•Outlook Anywhere is not configured to use NTLM Authentication - Not a valid option when I go to the security tab. Cannot change this.
•Corrupt Outlook profile - recreated the profile but still get the same error.
•Slow or unstable network connection - only one workstation gets this error so I doubt this is it.
•Antivirus programs - I disabled the AV and still get the same prompts.
•Shared calendars - They do use shared calendars but I am not sure how this would effect it. They all have access to each others accounts.
So I have gone through all of these and nothing works. I have also deleted and manually recreated the credential. I have called their hosting provider and he has no answers.
This is very annoying and I will give things a try if I get some possible answers.