we changed some upn in AD and the usernames did not updated and could not login. Once we restarted the server with sharepoint apps they could log in but if they go to username > My settings they still see the old user name. (Sharepoint 2010)
In this case of one user it will be
Move-SPUser -Identity "DOMAIN\jdoh" -NewAlias "DOMAIN\jdoe"
Will solve it only for one person. Is there a way how to update the usernames for everybody at once ?
Disclaimer: Apologize I'm not sharepoint expert.
Thank you ! Jim