Windows 7 Problem using Movie Maker under Parallels on my iMAC

J

JDD

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May 11, 2014
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Hello, I run Windows 7 on my iMAC via Parallells without any problems normally. It works e.g. fine to run the Windows Office programs. But I run into problems when I try to run Windows Movie Maker.

I get the instruction to run dxdiag.exe to verify my DDI-version.

And then I get the following message from Windows:



'"The file prl_umdd.dll is not digitally signed, which means that it has not been tested by Microsoft Windows

Hardware Quality Labs (WHQL). You can maybe get a WHQL-signed file from the hardware supplyer."



Is this a wellknown problem among mac-users who run Windows via Parallels?

Any suggestion what I should do?
 
Solution
Running into issues like the one you described when using Windows Movie Maker on a Windows 7 virtual machine through Parallels on an iMac is not uncommon. The error message about the unsigned file "prl_umdd.dll" indicates a potential driver issue. Here are some steps you can take to address this problem:
  1. Update Parallels Tools: Ensure that you have the latest version of Parallels Tools installed on your Windows 7 virtual machine. Parallels Tools includes drivers that enhance the performance and integration of Windows with the Mac host.
  2. Reinstall Parallels Tools: Try reinstalling Parallels Tools to refresh all the drivers and ensure they are correctly installed.
  3. Check for Updates: Make sure that both your...
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Running into issues like the one you described when using Windows Movie Maker on a Windows 7 virtual machine through Parallels on an iMac is not uncommon. The error message about the unsigned file "prl_umdd.dll" indicates a potential driver issue. Here are some steps you can take to address this problem:
  1. Update Parallels Tools: Ensure that you have the latest version of Parallels Tools installed on your Windows 7 virtual machine. Parallels Tools includes drivers that enhance the performance and integration of Windows with the Mac host.
  2. Reinstall Parallels Tools: Try reinstalling Parallels Tools to refresh all the drivers and ensure they are correctly installed.
  3. Check for Updates: Make sure that both your Windows 7 and macOS operating systems are up to date with the latest updates and patches.
  4. Driver Signature Enforcement: You can try disabling Driver Signature Enforcement temporarily to see if it resolves the issue. Here's how you can do it:
    • Restart Windows and press F8 during the boot process to access the Advanced Boot Options menu.
    • Select "Disable Driver Signature Enforcement" from the options.
    []Contact Parallels Support: If the issue persists, it might be valuable to reach out to Parallels Support for further assistance. They may have specific recommendations or solutions for running Windows Movie Maker in this environment. []Consider Alternative Video Editing Software: If you continue to face difficulties with Windows Movie Maker, you could explore alternative video editing software that is compatible with your setup. There are several third-party video editing applications available for Windows that may work smoothly in a virtual machine environment. By following these steps, you should be able to troubleshoot the issue with running Windows Movie Maker on your Windows 7 virtual machine via Parallels on your iMac. If you encounter any specific error messages or challenges during these steps, feel free to provide more details for further assistance.
 
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