In preparation for the migration to SP 2013 I have recently converted my main web app to claims-based authentication (following Technet instructions). After doing so I am experiencing the following problems:
- Some users are randomly getting password prompts in a browser when trying to access the site. When they cancel it they get401 Unauthorized error (providing password doesn't help). Sometimes the page will finally load ofter a couple of refreshes or will load only partially (looks like it is missing the css file). Sometimes they wait 5-10 minutes and it starts working
again.
- Some users are getting a password prompt in Outlook if they have lists connected from SharePoint. Canceling the prompt gives the401 error also. Removing and adding the list doesn't help - the prompt sometimes comes back.
- I also had issues with workflows and all of them were republished after the migration but sometimes users are still getting a "User cannot be found" error when trying to start a workflow. After a while it starts working again...
I couldn't find a pattern for the above problems and only a fraction of users are reporting it and the issue usually come and goes and then comes back after a while.
I didn't have the Super Reader/User accounts created before the migration. I created them and assigned last night (following Technet instructions - claims format + IIS reset) but after doing it the problem still exists.
Let me know if I am missing something obvious or should I just open the case with Microsoft?