Windows Application Event Log entries showing errors loading performance counter DLLs (4370903)

Windows Application Event Log entries showing errors loading performance counter DLLs

You may see entries in the Windows Application Event log with an Event ID of 1023 and a Source of Perflib. The error messages may be similar to one of the following:

1. Windows cannot load the extensible counter DLL "C:\Program Files\Quest\ChangeAuditor\Agent\Plug-in for Active Directory\CAADPerfCount.dll" (Win32 error code Windows cannot verify the digital signature for this file. A recent hardware or software change might have installed a file that is signed incorrectly or damaged, or that might be malicious software from an unknown source.)
2. Windows cannot load the extensible counter DLL "C:\Program Files\Quest\ChangeAuditor\Agent\Plug-in for ADAM\CAADAMPerfCount.dll" (Win32 error code Windows cannot verify the digital signature for this file. A recent hardware or software change might have installed a file that is signed incorrectly or damaged, or that might be malicious software from an unknown source.)
3. Windows cannot load the extensible counter DLL "C:\Program Files\Quest\ChangeAuditor\Agent\Plug-in for Windows File Servers\FSPerfCount.dll" (Win32 error code Windows cannot verify the digital signature for this file. A recent hardware or software change might have installed a file that is signed incorrectly or damaged, or that might be malicious software from an unknown source.)
4. Windows cannot load the extensible counter DLL "C:\Program Files\Quest\ChangeAuditor\Agent\Plug-in for Exchange\7.3.27109.0\CAEXPerformanceCounters.dll" (Win32 error code Windows cannot verify the digital signature for this file. A recent hardware or software change might have installed a file that is signed incorrectly or damaged, or that might be malicious software from an unknown source.)
5. Windows cannot load the extensible counter DLL "caperf.dll" (Win32 error code Windows cannot verify the digital signature for this file. A recent hardware or software change might have installed a file that is signed incorrectly or damaged, or that might be malicious software from an unknown source.).

 

It is safe to ignore these messages.  The performance counters still work in perfmon and have no issues loading.  These errors appear to happen on Windows start-up and don't seem to be related to the operation of CA at all.  The DLLs are all properly signed and have valid digital signatures.  The error message appear to stem from the Windows start function that measures a processes impact on boot time, which will only load "Microsoft signed" DLLs