Safe mode uninstall of Lansweeper 4.0 and a reboot allowed the server to resume normal operation.....

Well I did a reinstall......and this time it finished and started the service. Everything was running fine until I rebooted and logged back in.......it went back to the same errors I listed in my inital post. Anytime I open any mmc console (event viewer /server manager / etc.) I get this error:

"MMC could not create the snap-in. The snap-in might not have been installed correctly"
"Name: Event Viewer"
"CLSID: FX:{bo5566ad-fe9c-4363-be05-7a4cbb7cb510}" <-varies

After an RPC error, the server basically becomes unresponsive and I have to power it off. This is an ESX 4.0 Virtual Server running 2008 R2 and WSUS 3.0 is installed on the box as well. My inetpub directory is located on d: (not the system drive)

So I have uninstalled again.....which allows normal operation. Now that I can get back into event viewer, these messages have been logged about a minute after the Lansweeper service start:

App log:
Faulting application name: svchost.exe, version: 6.1.7600.16385, time stamp: 0x4a5bc3c1
Faulting module name: ntdll.dll, version: 6.1.7600.16385, time stamp: 0x4a5be02b
Exception code: 0xc0000005
Fault offset: 0x000000000004f2f1
Faulting process id: 0x290
Faulting application start time: 0x01cab00ee7fbfd84
Faulting application path: C:\Windows\system32\svchost.exe
Faulting module path: C:\Windows\SYSTEM32\ntdll.dll
Report Id: 460711e8-1c02-11df-a975-005056924a00

Sys log:
The RPC Endpoint Mapper service terminated unexpectedly. It has done this 1 time(s). The following corrective action will be taken in 120000 milliseconds: Restart the service.

The Remote Procedure Call (RPC) service terminated unexpectedly. It has done this 1 time(s). The following corrective action will be taken in 60000 milliseconds: Reboot the machine.

1. The server runs Microsoft's WSUS 3.0 SP2 as it's main app -- that's the only thing installed...(It does have McAfee's EPO Agent as well....but I am not running the AV client yet.)
2. Not 100% sure......but I do believe the error was occuring even with the service stopped.
3. I used IIS on a different port.....since WSUS was using the default website (port 80).
4. The second time I installed, I did not enable IP scanning and I still had the issues.

I am going to rebuild the server and try again. I will update you as soon as I'm finished.

Its-sysmgt thanks for the reply. Is your SQL 2008 db external to the Lansweeper Server, and are you using IIS or Lansweepers built in web server?

Lansweeper.....can you confirm that adding those Application Server roles mentioned in my previous post in 2008 R2 breaks the OS when Lansweeper 4.0 is installed?

Tried reproducing now on a physical win2008R2 machine, but it keeps working.
Could you post screenshots of all the roles and options you selected.
Was WUS installed in your latest test?

Could you try setting the website to a lower port (81,82)

@googoo : do you mean that you had this problem on a server where Lansweeper was not installed?

If yes it could be a vmware esx related problem.