Vsphere 5.1 – VMtools – RPC error
After our 4.1 to 5.1 upgrade we started to notice that our Windows hosts were logging a large number of Event log warnings from VMtools.
The content of the eventid 1000 says and is found in the Application Event Log.
“[ warning] [vmusr:vmusr] Error in the RPC receive loop: RpcIn: Unable to send.”
These errors do not seem to cause any functional issues that I have seen, they are just a pain as you can get quite a few. Besides a tidy event log = a happy server! So why do we get them, well it appears to happen when two concurrent user sessions are in use, over RDP. They can be the same user or different users.
It seems that when VMtools installs it does not create one of its files correctly. In fact its empty! The file is named tools.config and can be found the following locations, clearly if you cannot find it you will have to create it.
- Windows XP and Windows Server 2000/2003
C:\Documents and Settings\All Users\Application Data\VMware\VMware Tools\tools.conf
- Windows Vista, Windows 7, and Windows Server 2008
You will have to place the following entries into the file.
log = true
# Enable tools service logging to vmware.log
vmsvc.level = debug
vmsvc.handler = vmx
# Enable new “vmusr” service logging to vmware.log
vmusr.level = error
vmusr.handler = vmx
# Enable “Volume Shadow Copy” service logging to vmware.log
vmvss.level = debug
vmvss.handler = vmx