2081 Uninstall in Safe Mode doesn't work, The Windows Installer Service could not be accessed

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The Windows Installer Service could not be accessed. This can occur if the Windows Installer is not correctly installed. Contact your support personnel for assistance

Analysis: The attempt to start the service via services.msc fails.

Summary: Microsoft Windows Installer does not run while in Safe Mode, this means that programs cannot be installed or uninstalled in safe mode without giving a specific command using msiexec using the command prompt.

Here's how to enable it:

1. Using the Command Prompt (Elevated):

  • Open an elevated command prompt (search for "cmd", right-click, and select "Run as administrator").

  • Type the following commands, pressing Enter after each one:

    • REG ADD "HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Minimal\MSIServer" /VE /T REG_SZ /F /D “Service”

    • REG ADD "HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\MSIServer" /VE /T REG_SZ /F /D “Service”

    • net start msiserver

  • Close the command prompt.