Loader: Authentication handshake failed: No response to handshake document

HI! 

After upgrading remoteloader, we have this handshake timeout error in remoteloader log

AD-trace.log:

DirXML: [08/18/24 12:04:33.38]: Loader: Sending handshake document
DirXML: [08/18/24 12:04:34.36]:
DirXML Log Event -------------------
Thread = Connection Monitor
Level = warning
Message = Handshake timeout: closing connection
DirXML: [08/18/24 12:04:34.36]: Loader: null document
DirXML: [08/18/24 12:04:34.36]: Loader: Authentication handshake failed: No response to handshake document
DirXML: [08/18/24 12:04:34.36]: Loader: Waiting for DirXML to connect on 'TCP server socket, port 8091, address localhost'...

Restarting the remote loader instance does not fix the issue.

No idea on how to fix this as I'm new to IDM