SEP client cannot connect to SEPM by replacing sylink.xml, however, the client can telnet SEPM on communication port successfully.
Sylink debug log:
05/30 10:00:13.496 [2224:3556] AH: Setting the Browser Session end option & Resetting the URL session ..
05/30 10:00:13.527 [2224:3556] <ParseErrorCode:>12030=>Unknown error code.
Network Management Control software is forbidding the client from doing Http Access except for the websites in whitelist. This can also be caused if name resolution is not working.
Add the IP address of SEPM into whitelist to allow http traffic.
Applies To
SEP Endpoint Protection client when another Network Management Control software is installed on the Client.