Error 1638 – Skype for Business In-Place Upgrade Edge Server


Lync Server 2013 -Front-end Standard Edition

Lync Server 2013- Edge


Skype for Business In-Place upgrade was being performed , the Front-end server was successfully upgraded. The edge server was upgraded to Skype for Business in the topology and received the replicated event.

The Edge server SQL was upgraded to Service Pack 2, .Net 3.0 and Windows8.1-KB2982006-x64 were installed and the server was rebooted. The Skype for Business Server Edge installation was started and during the Uninstall of Roles an error occurred:

Error: Error returned while installing Server.msi(Feature_Server_Edge, Feature_Server_Update, RegistrarStoreUpdate), code 1638. Please consult log at C:\Users\Administrator\AppData\Local\Temp\1\Remove-Server.msi-Feature_Server_Edge,Feature_Server_Update,RegistrarStoreUpdate-[2016_01_31][16_41_37].log




  1. Exit the Skype for Business In-Place upgrade
  2. Go to Start-> Control Panel -> Programs and Features
  3. Find Lync Server 2013, Edge Server
  4. Right Click and select Uninstall
  5. Once the Lync Server 2013, Edge Server is completed removed
  6. Close Programs and Features
  7. Re-start the Skype for Business Server installation.

You will now be able to move past the Error 1638 and continue with your Skype for Business In-Place upgrade.


One thought on “Error 1638 – Skype for Business In-Place Upgrade Edge Server

  1. A very big thank you.
    I was considering that route to go prior to seeing your blog which confirmed it.
    I went ahead and uninstalled it and progressing.

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