Monthly Archives: March 2019

Windows Server 2016 Activation Error

Attempting to activate / convert an evaluation copy of Windows Server 2016 (specific build 14393.rs1_release.161220-1747) to the full version using a valid retail key, resulted in the following error:

This edition cannot be upgraded.

A solution is to perform the activation via console with the following command:

Dism /online /Set-Edition:<Edition> /AcceptEula /ProductKey:<ProductKey>

where <Edition> is either ServerDatacenter or ServerStandard and <ProductKey> is your product key with dashes.

The Deployment Image Servicing and Management tool may indicate that it has finished installing product key, but then hang at 10.0% on the next step:

Removing package Microsoft-Windows-Server.....

If after 30 minutes it has not progressed – cancel the entire process, then repeat the same steps and it should go through the second time.

Windows Server 2016 Remote Desktop Connection Fails

Brand new install of Windows 2016 Server Evaluation without any updates installed, specific build 14393.rs1_release.161220-1747 (also 14393.447)  Attempting to remote desktop to the server from a Windows 10 client resulted in an error:

An authentication error has occurred.
The function requested is not supported
Remote computer:
This could be due to CredSSP encryption oracle remediation. For more information, see

Note: For Windows 7 clients, the last line above in red color will be omitted from the error message.

This happened for both Datacenter and Standard installs of the same build. The fix is to simply install all available updates from Windows Update, rebooting in between as necessary. After all updates have been installed, try the remote connection again.