Shaun Cassells at MyITForum.com

How to resolve: The PsExec service running on ?????????????? is an incompatible version.

This situation occurs when multiple versions of PSTools have been executed on a remote system. The fix below is specifcally for PSExec.  It can be applied to other PSTools.

The Following steps need to be completed

1. Stop service
2. Delete exe from %windir%
3. Delete exe from %system32%
4. Delete servce

Example (using sc.exe [service control] from windows resource kit)

1. sc \\%1 stop psexesvc
2. del \\%1\admin$\psexesvc.exe
3. del \\%1\admin$\system32\psexesvc.exe
4. sc \\%1 delete psexesvc

%1 is the input to a script in this case the remote computer name