How to Fix Google Chat Not Working after Lightspeed

  1. Login to the Mac as ladmin and DISABLE PREFERENCES 
  2. Open up System Preferences
  3. Open up Users & Groups
  4. Click the unlock icon in the bottom left.

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  5. Right click the user account on the left and click Advanced Options 

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  6. Change their Account Name to their updated name NOTE - THEY WILL NOW USE THIS ACCOUNT NAME TO SIGN IN. DO NOT CHANGE THEIR HOME DIRECTORY 

     

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  7. Click Ok, out of System Preferences and logout or restart and now the user should be able to sign into their computer with updated login information.