Hello there,

 

1. Version of your operating system: Windows 11 Version 24H2 (OS Build 26100.4652)
2. Name and version number of the Kaspersky application: 21.3.10.391 (m)
3. When starting Mordhau (a game on Steam), I'm experiencing an error message. Digging into the logs, it seems that part of the SSL messages can't get through.
   Disabling KIS totally helps to get past this problem. I couldn't yet isolate that problem.
   
   Another problem related to this one:
   Whenever I want to add Mordhau to the list of exceptions for programs, Kaspersy crashes. Otherwise I'd just add a rule to omit that game.
   On the second screenshot, when I press OK, KIS crashes and I'm sending the reports to you.
   
4. If necessary, attach a screenshot of the problem 
   
   You can read my troubleshooting with the game developers in this discord thread 
   https : //discord.com/channels/275436245318893568/1399120255774756895
   
   In the logs
   ```
   [2025.07.30-23.19.09:635][ 21]LogHttp: Warning: 00000210B36A2990: request failed, libcurl error: 35 (SSL connect error)
   [2025.07.30-23.19.09:635][ 21]LogHttp: Warning: 00000210B36A2990: libcurl info message cache 0 (  Trying 20.42.182.108...)
   [2025.07.30-23.19.09:635][ 21]LogHttp: Warning: 00000210B36A2990: libcurl info message cache 1 (TCP_NODELAY set)
   [2025.07.30-23.19.09:635][ 21]LogHttp: Warning: 00000210B36A2990: libcurl info message cache 2 (Connected to 12D56.playfabapi.com (20.42.182.108) port 443 (#1))
   [2025.07.30-23.19.09:635][ 21]LogHttp: Warning: 00000210B36A2990: libcurl info message cache 3 (ALPN, offering http/1.1)
   [2025.07.30-23.19.09:635][ 21]LogHttp: Warning: 00000210B36A2990: libcurl info message cache 4 (Cipher selection: ALL:!EXPORT:!EXPORT40:!EXPORT56:!aNULL:!LOW:!RC4:@STRENGTH)
   [2025.07.30-23.19.09:635][ 21]LogHttp: Warning: 00000210B36A2990: libcurl info message cache 5 (TLSv1.3 (OUT), TLS handshake, Client hello (1):)
   [2025.07.30-23.19.09:635][ 21]LogHttp: Warning: 00000210B36A2990: libcurl info message cache 6 (OpenSSL SSL_connect: SSL_ERROR_SYSCALL in connection to 12D56.playfabapi.com:443 )
   [2025.07.30-23.19.09:635][ 21]LogHttp: Warning: 00000210B36A2990: libcurl info message cache 7 (Closing connection 1)
   [2025.07.30-23.19.09:635][ 21]LogPlayFabAPI: Error: RetryRequest: LoginWithSteam request exhausted retries (1)
   [2025.07.30-23.19.09:635][ 21]LogPlayFabAPI: Error: LoginWithSteam: Request Timeout or null response (2 Request Timeout or null response)
   [2025.07.30-23.19.09:636][ 21]LogMordhauGameInstance: Error: Platform login failed, Reason: Login failed
   ```
   
   Please help, either with the Mordhau problem, or the exceptions problem, either one I'm ok with as long as I can play my game with it.
   
   Cheers,
   tempx

Welcome to Kaspersky Community.

 

I would migrate 1st Your KIS to Kaspersky Standard, KIS getting obsolete, and then re-test.