SharePoint issue log in - user account Active Directory

Question

Hello,
After recovering sharepoint server from external farm, users are unable to login with AD account.
When entering the credentials, the credentials window always pops up...
can anyone help?

the image below has the type of authentication used.

Thanks

Answer 1

Try the following steps and see whether you are able to login.

1. From central administration, ensure your site collection administrators are valid. Try resetting them and see whether you are able to login.
2. Run the user profile synchronization service and see whether it solves the problem
3. Try disalbing the loopback check and see whether it helps.

Answer 2

@Flórida Araújo

You could follow suggestions provided by sreejukg to troubleshoot the issue.

Whether all site collections occur this issue?

And create a new AD account then try to login in SharePoint with this account.

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