I have experienced an error while checking the sender.log file in primary site server,

I got following error,

When I checked on destination server that is showing SMS installation site drive has 0 bite space,

I got to know this error Win32 error =112 means, SMS Primary Site Server could write/send to the

Destination child site server,

Check on SMS installation drive, if you can remove some UN wanted files then make some space on drive,

Once the space will be available on drive, Sender error will be removing, and your SMS Primary site will work functionally.