Thank You! And wow, talk about obscure. Using the below I was able to find the 
following post with all four GUIDs/URLs: 
https://social.technet.microsoft.com/Forums/office/en-US/4cdc901a-ae64-46c5-a1df-f0193db04768/monthly-updates-for-office-365-2016-using-clicktorun?forum=Office2016setupdeploy

J

From: [email protected] [mailto:[email protected]] On 
Behalf Of Steve Whitcher
Sent: Tuesday, June 21, 2016 1:05 PM
To: [email protected]
Subject: Re: [mssms] Office 365 C2R Channel Inventory

I could swear that I've seen a few articles detailing reg keys that can be 
changed to switch the update branch of an existing install, but I'm not finding 
them now.

I believe that this registry value is changed to point to a different URL for 
whichever channel you choose:

HKLM\SOFTWARE\Microsoft\Office\ClickToRun\Configuration\CDNBaseUrl

In my case, on a machine running First Release for Current Channel, the value 
is set to:
http://officecdn.microsoft.com/pr/64256afe-f5d9-4f86-8936-8840a6a4f5be

Another machine, running Deferred Channel, is set to:
http://officecdn.microsoft.com/pr/7ffbc6bf-bc32-4f92-8982-f9dd17fd3114

Unfortunately, I'm not sure if that registry value will be there if Office 365 
is set to use a network share for it's update path.  In that case a different 
value is used: 
HKLM\Software\Microsoft\Office\15.0\ClickToRun\Configuration\updateurl

From what I'm reading, I wouldn't expect to find updateurl and CDNBaseURL both 
on the same system.


Steve

On Tue, Jun 21, 2016 at 9:29 AM, Jason Sandys 
<[email protected]<mailto:[email protected]>> wrote:
Anyone know how to tell what channel an installation of Office 365 C2R is using 
(preferably from the registry)?

Thanks,
J




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