Workstation Pro 12 to 15 upgrade - now can access any shared VM - Error - Unable to connect to the MKS: Internal error

[Tobes49]

I've upgraded from workstation Pro V12 to V15 (As windows 10 wouldn't update with version 12!)

Upgrade all went fine but now when I try to access any shared VM on ESXI server I get the error - Unable to connect to the MKS: Internal error

Attached Here the log from a VM

Anything else to try?

Moderator note: Moved pasted log content into an attachment.

[a_p_ · Accepted solution]

Only a guess. Please see whether enabling an older protocol version (https://kb.vmware.com/s/article/2151644) helps.

André

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[Tobes49]

Thank you Andre

I will look into why not/enabling TCP1.2 on teh ESXi host for incresed security

Also thank you who changed my quote into an attachment

[Tobes49]

Back again with another issue

Im in the process of moving the old ESXi  server over to a new 6.7 one

The problem is I cant get both working in workstation

With the line added in the config.ini file

tls.protocols = "tls1.0" 

the old ESXi works but the new one wont

If I remove the tls.protocols = "tls1.0" line from config file the new one (6.7) works and the old one doesn't.

Ive tried adding

tls.protocols = "tls1.0"

tls.protocols = "tls1.1"

tls.protocols = "tls1.2"

tls.protocols = "ssl2"

tls.protocols = "ssl3"

to see if that would work but only the old one works

What am i missing from the config file?

Cheers

Toby