When trying to configure the backup schedule for an Exchange 2007 server, during the backup selection, it failed with a "Failed to get connection to plugin" error.
Trace logs show the following messages
The execution of power shell commands on the client machine is taking time (~2 mins) to respond which is causing issues of time out. This could also be due to the server being busy as well.
Increase timeout from the default 60 sec for CLI proxy connections.
Follow the steps below:
1) Manually create 'cliproxy.cfg' within 'config' folder
2) create following stanza for 2 minutes timeout
[CliProxy:Timeout]
Value=120
3) Save configuration file (no need to restart NetVault)