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MS Office

Change update release channel


  1. RegEdit
  2. Go to Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\ClickToRun\Configuration
  3. CDNBaseUrl
  4. UpdateChannel

Note: Both CDNBaseURL & UpdateChannel point to the same URL


  • Current Channel:
    CDNBaseUrl =
  • Deferred Channel:
    CDNBaseUrl =
  • First Release for Current Channel:
    CDNBaseUrl =
  • First Release for Deferred Channel:
    CDNBaseUrl =

REF for URLs

Script to change URLs

Note: not sure where I got this from. Not sure if it's a batch script or a PowerShell script


reg query HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\ClickToRun\Configuration\ /v CDNBaseUrl

if %errorlevel%==0 (goto SwitchChannel) else (goto End)


reg add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\ClickToRun\Configuration /v CDNBaseUrl /t REG_SZ /d "" /f

reg delete HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\ClickToRun\Configuration /v UpdateUrl /f

reg delete HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\ClickToRun\Configuration /v UpdateToVersion /f

reg delete HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\ClickToRun\Updates /v UpdateToVersion /f

reg delete HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Office\16.0\Common\OfficeUpdate\ /f

"%CommonProgramFiles%\microsoft shared\ClickToRun\OfficeC2RClient.exe" /update user