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c:\\Windows\System32\wuapp.exe is not a valid Win32 application.
  1. #1



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    c:\\Windows\System32\wuapp.exe is not a valid Win32 application.

    i keep getting this message when trying to start windows update from my start menu.

    c:\\Windows\System32\wuapp.exe is not a valid Win32 application.



    any help on this?

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  2. #2
    tom982's Avatar

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    Re: c:\\Windows\System32\wuapp.exe is not a valid Win32 application.

    Hello joeschmo and welcome to the forums

    SFC Scan


    1. Open your start menu and in the search box, type Command Prompt
    2. When you see Command Prompt on the list, right-click on it and select Run as administrator
    3. When command prompt opens, copy and paste the following commands into it, press enter after each

      sfc /scannow

      Wait for this to finish before you continue

      copy %windir%\logs\cbs\cbs.log %userprofile%\Desktop\cbs.txt

    4. This will create a file, cbs.txt on your [b]Desktop[b]. Please attach this to your next post.



    Tom

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  3. #3



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    Re: c:\\Windows\System32\wuapp.exe is not a valid Win32 application.

    Thanks Tom 982.
    When I saw Command Prompt I right clicked and chose "Run as Administrator" and then received the following:

    "Problem with Shortcut: The item 'cmd.exe' that this shortcut refers to has been changed or moved, so this shortcut will no longer work properly. Do you want to delete this shortcut"

    So I used common sense and just typed in cmd.exe - that worked.

    I tried twice to attach the cbs file, but I receive the following: "Your submission could not be processed because a security token was missing."

    I suppose I could copy and paste the file but it is huge = 20.6MB

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  4. #4
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    Re: c:\\Windows\System32\wuapp.exe is not a valid Win32 application.

    Hi joeschmo,

    That's very strange, we'll have to fix that afterwards.

    Try uploading it to MediaFire then:

    Free Cloud Storage - MediaFire

    Tom

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  5. #5



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      Thread Starter

    Re: c:\\Windows\System32\wuapp.exe is not a valid Win32 application.

    i tried to upload from URL but I am told "invalid file". I must be doing something wrong but I'm not sure what.

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  6. #6



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      Thread Starter

    Re: c:\\Windows\System32\wuapp.exe is not a valid Win32 application.

    this should be the link

    Free Cloud Storage - MediaFire

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  7. #7
    tom982's Avatar

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    Re: c:\\Windows\System32\wuapp.exe is not a valid Win32 application.

    Excellent Thanks. Now for a batch file:

    Batch File


    1. Click the Start button , click All Programs, click Accessories and then click Notepad
    2. Copy (Ctrl+C) all of the text in the following box and paste (Ctrl+V) it into Notepad

      Code:
      taskkill /f /im wuapp.exe
      
      if not exist %SYSTEMDRIVE%\tom982 mkdir %SYSTEMDRIVE%\tom982
      
      icacls C:\Windows\system32\wuapp.exe /save %SYSTEMDRIVE%\tom982\wuapp
      
      takeown /f C:\Windows\system32\wuapp.exe
      
      icacls C:\Windows\system32\wuapp.exe /grant administrators:F
      
      ren C:\Windows\system32\wuapp.exe *.bak
      
      copy C:\Windows\WinSxS\amd64_microsoft-windows-w..pdateclient-activex_31bf3856ad364e35_7.6.7600.256_none_66110e7f0b087d75\wuapp.exe    C:\Windows\system32\wuapp.exe
      
      icacls C:\Windows\system32 /restore %SYSTEMDRIVE%\tom982\wuapp
      
      sfc /scannow
      
      copy %SYSTEMROOT%\Logs\CBS\CBS.log %USERPROFILE%\Desktop\CBS.txt
      
      start notepad.exe %USERPROFILE%\Desktop\CBS.txt
    3. Go to File > Save As... and save it to your Desktop named fix.bat. Make sure you change the Save as type to All Files (*.*)
    4. Locate fix.bat on your Desktop and double-click on it



    Tom

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  8. #8



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      Thread Starter

    Re: c:\\Windows\System32\wuapp.exe is not a valid Win32 application.

    didn't work

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  9. #9



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      Thread Starter

    Re: c:\\Windows\System32\wuapp.exe is not a valid Win32 application.

    what do you think i should try next

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  10. #10
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    Re: c:\\Windows\System32\wuapp.exe is not a valid Win32 application.

    Hi joeschmo,

    Sorry for the late reply, I was at Creamfields last weekend. Let's try this:

    MGADiag

    I would like you to make a MGADiag report for us please.

    1. Download MGADiag (by Microsoft) from the link found below:

      http://go.microsoft.com/fwlink/?linkid=52012

    2. Run the tool by double clicking on the file. Press Continue when prompted
    3. When it has finished, press Copy then paste this into your next post


    Tom

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