Office 365 – Versions and Update Channels – Registry Information

Because Microsoft Office 365 is a “Software as a Service” (SaaS) like almost everything on Microsoft nowadays, it is continuously updating and getting better.

As a SysAdmin on an enterprise, you may want to have some kind of control about when updates occur, which machines receive the new updates first, etc.

Additionally, you may want to have a view of the installed versions, update channels, etc on your software management suite or simply need to query a machine to get this information.
All of this can be found in registry so, here’s a quick look where to find them:

Registry Path HKEY_LOCAL_MACHINE\Software\Microsoft\Office\ClickToRun\Configuration

Keys

• ClientVersionToReport
  Current installed Office 365 client version
• UpdateChannel / CDNBaseUrl
  Sets the update channel configuration:

• Current Channel:
  CDNBaseUrl = http://officecdn.microsoft.com/pr/492350f6-3a01-4f97-b9c0-c7c6ddf67d60

• Deferred Channel:
  CDNBaseUrl = http://officecdn.microsoft.com/pr/7ffbc6bf-bc32-4f92-8982-f9dd17fd3114

• First Release for Current Channel:
  CDNBaseUrl = http://officecdn.microsoft.com/pr/64256afe-f5d9-4f86-8936-8840a6a4f5be

• First Release for Deferred Channel:
  CDNBaseUrl = http://officecdn.microsoft.com/pr/b8f9b850-328d-4355-9145-c59439a0c4cf

There’s a lot more to explore but this ones gives you a lot of information about your installed versions and update configuration.