Something here may help.
https://learn.microsoft.com/en-us/windows-server/security/tls/tls-registry-settings#tls-12
--please don't forget to Accept as answer if the reply is helpful--
This browser is no longer supported.
Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.
Hi, I have a clean install of Server 2019 Standard and have worked through the various errors I was getting. However I am left with one error I cant seem to fix.
The error is:-
Error ID 36874 - An TLS 1.2 connection request was received from a remote client application, but none of the cipher suites supported by the client application are supported by the server. The TLS connection request has failed.
Is it a simple case of enabling TLS 1.2 on my server? If yes, how do I do this?
Secondly, theses errors occur when there are no client PC's turned on e.g. in the early hours of the morning. Is this someone trying to connect remotely to the PC? a hacker?
or finally, should I just ignore this and worry about something else? haha
Any help or guidance would be much appreciated.
Regards,
Cliff
Something here may help.
https://learn.microsoft.com/en-us/windows-server/security/tls/tls-registry-settings#tls-12
--please don't forget to Accept as answer if the reply is helpful--
Hi,
If you would like to enable TLS 1.2, you could refer to DSPatrick's link or below link.
https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-R2-and-2012/dn786418(v=ws.11)?redirectedfrom=MSDN#tls-12
If you would like to figure out which applicaiton called out the TLS 1.2 connection, you could install Network Monitor or Process Monitor for further analysis.
Network Monitor - https://www.microsoft.com/en-sg/download/details.aspx?id=4865
Process Monitor - https://learn.microsoft.com/en-us/sysinternals/downloads/procmon
Hope the information helps.
Thanks,
Eleven
----------
If the Answer is helpful, please click "Accept Answer" and upvote it.
I think with your help I might have fixed it! Well the error has not appeared in almost 20 hours.
As suggested I enabled TLS1.2 in the registry. It didn't work at first as I never added the 'DisabledByDefault' key. I read that Server 2008 needed it so I figured maybe Server 2019 needs it.
After adding that key I have not seen the error return.
Still no idea what was trying to connect to it. I ran the Process Monitor tool but this was after adding the additional key.
I will mark the answers above as 'Accepted' but will keep an eye on it for a few more days.
Thanks for all your help.
Unfortunately the error present itself again in the early hours of this morning.
Error 36874 Schannel An TLS 1.2 connection request was received from a remote client application, but none of the cipher suites supported by the client application are supported by the server. The TLS connection request has failed.
Any more ideas on what I can try?
Regards.