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"Error 1719: Windows Installer Service could not be accessed" while installing Parallels Tools

APPLIES TO:
  • Parallels Desktop 7 for Mac Standard Edition

Symptoms

"Error 1719: Windows Installer Service could not be accessed" while installing Parallels Tools in 64-bit Windows virtual machine.



Cause

MSI service settings need to be modified in Windows registry.

Resolution

1. Restart the virtual machine and take a Snapshot in order to create a safe backup.

2. Open Start menu, in Run (for Windows XP) or Search bar (for WIndows Vista and 7) type "regedit".
3. Click on File menu --> Save As and save it in a safe location in Windows guest OS. 
4. Go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSIserver\WOW64



5. Right click WOW64, and select "Modify". Set Value Data to 0 and Base should be Hexadecimal.
6. Close all the windows and restart the virtual machine.



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