AppVolumes 2.12.1 error: schannel 36888 fatal alert 10 internal error state 1203

[malefik]

Hello!

We use VCSA 6.5.0-5705665 and App Volumes 2.12.1 on Windows 2012R2.

The VCSA certificate is self-signed, but is included in the Trusted Root Certification Authorities on the AppVolumes server.

Every two minutes we see the error "schannel 36888 fatal alert 10 internal error state 1203" in the log of the AppVolumes server.

Any ideas?

[krakatau]

The same behaviour in 2.15 version.

The source of this error seems to come from the App Volumes PowerShell Remoting service, that has an SSL bind to 54311 port created with default self-signed certificate.

Official docs have not so much information about use of it, but very 2 minutes there is a loopback HTTP Get request that causes SCHANNEL to generate fatal alert. Actually, every http request, even external, will cause fatal error to show in System log.