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RDS Encryption error

RDS - encryption error...

Getting this on a laptop frequently this morning, connected over remote VPN.  

Also get it a few occasions when the user worked on a different machine over site to site VPN tunnel.

Server 2016.
Clients Win10 1803.
Site to site VPN - Cisco ASA 5505
remote VPN Cisco client and more recently cisco anyconnect.

Ideas?
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McKnife
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ASKER

yes into rds.
fully patched i belive.  14393.1480
Almost a year behind on patching!
Current build is seen here and that is where you should download the update from:  https://support.microsoft.com/en-us/help/4103720
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ASKER

ah yes, same principle as win10..
Sounds like the CredSSP error.  If a PC is updated and the server is not, you will get that error.  I did a little blog article on it.
https://blog.lan-tech.ca/2018/05/10/an-authentication-error-has-occurred/
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ASKER

Different error.  Guess similar.  Will try May 18 update.
RDS-enc.jpg
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ASKER

any reason why the updates arent being pulled into wsus automatically?
https://support.microsoft.com/en-gb/help/4345418
The reason is: it is no security update, but only for quality improvements and that type of update ("quality only") is not imported into wsus automatically, but needs to be manually imported.