Can’t Sign in to Skype for Business – 365 after changing Email Address

 

 

Recently we swapped a users UPN on a local domain controller ( which syncs to 365 via AAdconnect) to another domain and SMTP alias, all worked well however she could not login to Skype for Business.

Resetting Windows Credentials, Caches and registry items still would not fix this.

Most of the time this is due to the SIP Address not being correct. Little did we know this user had Lync before migrating to 365 so they had a SIP address in the attribute editor

Changing this resolved the issue

 

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Tags: 2016, 365, can't sign in to Skype for Business, cannot login, change email, login, reset SIP Address, SIP, Skype for Business, You didn't get signed in

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