Local admin account without admin rights | AD login suddenly stops working

Local admin account without admin rights | AD login suddenly stops working

Hello dear support team, 

I have the problem that the AD login suddenly no longer works. For each AD user comes the message that the user/password are wrong. We have not changed anything in the infrastructure. 

So I logged in with the local administrator account, but found out that it doesn't seem to have admin rights. 


Is it possible to give the administrator account the admin rights again without accessing the SDP interface?  

Do you have any idea why the AD login does not work anymore? 
The passwords and users we tried to login are correct and working fine on other machines with ad login. 
A short clip of the login process of the serverout log is attached. 


Many thanks in advance

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