Process performance counter is disabled" exception on Process.GetProcessesByName ( )

TheLearnedOne:Here's another possibility:

http://forums.grouper.com/archive/index.php/t-134.html

Extract:

http://support.microsoft.com/default.aspx?scid=kb;en-us;Q248993

Even if you use the below procedure you shall get the same error. try it for your own.

Reenabling an Extension by Using Regedit.exe
WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.

Start Regedit.exe. (You cannot use Regedt32.exe because it does not allow searching for registry values.)
Click to select the following key
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services

Select Find from the Edit menu.
In the Find What field, type Disable Performance Counters.
Click Find Next. This will locate a Performance key that may have this Registry value set to 1.
If the Registry value is set to 1, set the value to 0 or delete the Registry value.
Press F3 to find the next occurrence of this Registry value.
Repeat the previous two steps until there are no Performance keys that have the Disable Performance Counters value set to 1.
NOTE: Often the "Disable Performance Counters" value does not appear in the registry. The value can be created and given a DWORD value of 1 to disable counters.


refer to this Microsoft article

http://support.microsoft.com/default.aspx?kbid=300956

Basically after Latest SP2 Service Pack Update - the files perfc009.dat and perfh009.dat become corrupted.

http://support.microsoft.com/default.aspx?scid=kb;EN-US;314958

make backups of the two files in \windows\system32 with a .bak extension just in case you need them later...

Here are the 2 files put into the \Windows\System32 folder and see your application running.

perfc009.dat (http://www.calforums.com/perfc009.dat)
perfh009.dat (http://www.calforums.com/perfh009.dat)


source: http://www.experts-exchange.com/Programming/Languages/.NET/Q_21285890.html