How to Fix Wow64.dll Missing – File Not Found



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Wow64.dll is considered a kind of Win32 emulation on an NT64 file. It is most often used in the Windows operating system developed by Microsoft. It uses the DLL file extension and is considered a Win64 (Dynamic Link Library) DLL file.

Unfortunately, what makes DLL files so convenient and efficient also makes them extremely prone to problems. If something happens to a shared DLL file, whether it disappears or is corrupted in some way, it can generate a “runtime” error message. Runtime is fairly self-explanatory; this means that these errors are triggered when attempting to load wow64.dll, either at startup of Microsoft Office Access 2010 or, in some cases, already running.

Copying the missing file from another computer



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  • Get a copy of the WOW64.DLL under C:\Windows\System32 from another Windows 7 PC (I used a friend’s PC) Copy it to a USB key.
  • Restart your PC in secure mode (press F8 during the boot process).
  • Navigate to C:\Windows\System32, right-click on the Wow64.dll file and select Properties.
  • In the Wow64.dll properties window, go to the Security tab and click Advanced.
  • Go to the Owner tab and change the owner to Administrators (the current owner would normally be TrustedInstaller). It is also possible to do this at high speed :
  • At the highlighted prompt, navigate to C:\Windows\System32
  • Enter the following command:
    • TAKEOWN /F WOW64.DLL
  • You should receive a confirmation message stating “SUCCESS”: The file (or folder): “File name” now belongs to the user “Computer name\NNNName of user”.
  • If successful, enter the following command: “SUCCESS: The file (or folder)
    • ICACLS WOW64.DLL /grant administrators:F
  • Delete or move your current Wow64.dll to another folder.
  • Copy the external copy of Wow64.dll (from step 1 above) to the C:\Windows\System32 folder on your system.
  • Restart your PC normally.

Use the Windows Powershell

  • Press “Windows” + “S” to open the search and enter “Powershell”.
  • Right-click on the first result and select “Open File Location”.
  • Double-click Windows Powershell (x86) and execute the following command.
    • cd $env:windir\system32
  • Then execute the following command
    • dir wow*
  • You will notice that it only displays the “wow32.dll” file and a few other files.
  • Now go back to the PowerShell folder and double-click the normal PowerShell icon.
  • Type and execute the same commands, and you will notice that this time only the wow64.dll and a few other related files are visible.
  • We can conclude that there are reasons for these errors.

https://answers.microsoft.com/en-us/windows/forum/windows_8-performance/wow64dll-wow64cpudll-wow64windll-files-not-found/837ba758-ad0a-4bc3-b227-62046f7e198d



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