Step-by-Step Guide: Correcting ‘pdh.dll’ File Not Found Issues

Pdh.dll errors are caused by situations that lead to the removal or corruption of the Windows Performance Data Helper (PDH)DLL file . In some cases, pdh.dll errors could indicate aregistry problem, a virus or malware issue, or even ahardware failure.

The pdh.dll error message could apply to any program or system that might utilize the file on any of Microsoft’soperating systems , includingWindows 11 ,Windows 10 ,Windows 8 ,Windows 7 ,Windows Vista ,Windows XP , and Windows 2000.

How to Fix Pdh.dll Errors

Follow these steps in the order they’re given below to try the simpler solutions first.

Do not download pdh.dll from a “DLL download” website. There are many reasons whydownloading a DLL file like that is a bad idea . If you need a copy of this file, it’s best to obtain it from its original, legitimate source.

1. Restore pdh.dll from the Recycle Bin . The easiest possible cause of a “missing” pdh.dll file is that you’ve mistakenly deleted it.
   If you suspect this, but you’ve already emptied the Recycle Bin, you may be able to recover the file with afree file recovery program .
   Start Windows in Safe Mode to complete any of these steps if you’re unable to access Windows normally due to the error.
2. Use System Restore to undo recent system changes . If you suspect that the pdh.dll error was caused by a change made to an important file or configuration,System Restore could solve the problem.
3. Run the sfc /scannow System File Checker command to replace a missing or corrupt copy of the pdh.dll file. Since this DLL file is provided by Microsoft,System File Checker should restore it.
4. Run a virus/malware scan of your entire system . Some pdh.dll errors could be related to a virus or other malware infection on your computer that has damaged the DLL file. It’s even possible that the pdh.dll error you’re seeing is related to a hostile program that’s masquerading as the file.
5. Reinstall the program that uses the pdh.dll file . If the error occurs when you use a particular program, reinstalling the program should replace the file.
6. Update the drivers for hardware devices that might be related to pdh.dll. If, for example, you’re receiving a “The file pdh.dll is missing” error when you play a 3D video game, try updating thedrivers for yourvideo card .
   The pdh.dll file may or may not be related to video cards—this was just an example. The key here is to pay very close attention to the context of the error and troubleshoot accordingly.
7. Roll back a driver to a previously installed version if pdh.dll errors began after updating a particular hardware device’s driver.
8. Install any available Windows updates . Manyservice packs and otherpatches replace or update some of the hundreds of Microsoft distributed DLL files on your computer. The pdh.dll file could be included in one of those updates.
9. Test your memory and thentest your hard drive . We’ve left the majority of hardware troubleshooting to the last step, but your computer’smemory andhard drive are easy to test and are the most likely components that might cause pdh.dll errors as they fail.
   If the hardware fails any of your tests,replace the memory orreplace the hard drive as soon as possible.
10. Repair your installation of Windows . If the individual pdh.dll file troubleshooting advice above is unsuccessful, performing a startup repair or repair installation should restore all Windows DLL files to their working versions.
11. Use a free registry cleaner to repair pdh.dll related issues in the registry. A free registry cleaner program may be able to help by removing invalid pdh.dllregistry entries that might be causing the DLL error.
    We rarely recommend the use of registry cleaners. We’ve included the option here as a “last resort” attempt before the destructive step coming up next.
12. Perform a clean installation of Windows . This will erase everything from thehard drive and install a fresh copy of Windows. If none of the steps above correct the pdh.dll error, this should be your next course of action.
    All the information on your hard drive will be erased during this step. Make sure you’ve made the best attempt possible to fix the error using a troubleshooting step prior to this one.
13. Troubleshoot for a hardware problem if any pdh.dll errors persist. After a clean installation of Windows, your DLL problem can only be hardware related.

Need More Help?

If you’re not interested in fixing this problem yourself, seeHow Do I Get My Computer Fixed? for a full list of your support options, plus help with everything along the way like figuring out repair costs, getting your files off, choosing a repair service, and a lot more.

Causes of Pdh.dll Errors

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There are several ways pdh.dll errors can show up on your computer. Here are some of the more common error message you might see:

• Pdh.dll Not Found
• This application failed to start because pdh.dll was not found. Re-installing the application may fix this problem.
• Cannot find [PATH]\pdh.dll
• The file pdh.dll is missing.
• Cannot start [APPLICATION]. A required component is missing: pdh.dll. Please install [APPLICATION] again.

These errors might appear while using or installing certain programs when Windows starts or shuts down, or maybe even during a Windows installation. The context of the pdh.dll error is an important piece of information that will be helpful while solving the problem.

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