RDS CAL Migration advice

Hi Everybody,

We are currently looking at moving our 2008/2008 r2 RDS Client Access Licenses from a Windows Server 2008 r2 server to a new server running Windows Server 2016. I've pulled together a plan to do this from the Microsoft Docs. However I would like some advice from someone who has done this before. We will be using the web browser migration method and both servers are on the same domain.

We don't plan on upgrading anything else yet, the servers that will use the licenses are still 2008 r2.

There are a few things I haven't been able to figure out.

  • How does the actual migration process work? will all licenses move in one go and the old server immediately becomes obsolete?
  • Will there be any user outage while this happens?
  • How long does the process take?
  • What do I do if it goes wrong? (I've no been able to find a back out plan online)
  • Is there anyway to test the migration process

Any advice is greatly appreciated!
Craig EllisTechnical ConsultantAsked:
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MaheshArchitectCommented:
I have done this activity before from 2008 to 2008 R2, not recently

Basically process use any one method out of three and connects to MS clearing house and activate your license server just like OS activation

U should already have installed license server role on 2016 server and it must be registered in active directory
after that it can issue trial licenses for 120 days, now you need to ensure that this license server is listing in RDS console as licensing server, now you are good to start migration process by any of 3 methods.
https://docs.microsoft.com/en-us/windows-server/remote/remote-desktop-services/migrate-rds-cals#establish-RDS-CAL-migration-method

migration process will not deactivate source licensing server, its manual task and it every time warn you during migration to remove CALs manually, you should deactivate old license server after migration to avoid violating license terms
there is no outage in this process
if process fails, migration would not happen and you can retry again
process does not take much time and it depends on how many type of TS CALs you have (only user CALs, and / or device CALs)
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Craig EllisTechnical ConsultantAuthor Commented:
Thank you Mahesh! the advice is greatly appreciated.
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