Fix: Only One Instance of Wusa.exe is Allowed to Run

Reregister Windows Update services to fix this issue

3 min. read

Updated onOctober 4, 2023

updated onOctober 4, 2023

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Key notes

Let’s say you’re trying to get the latest update for your Windows, and you’re greeted by the following errorOnly one instance of wusa.exe is allowed to run.

What now? Thiserrormostly occurs when you’re trying to install a Windows Standalone Update package, and it can be responsible forWindows Update not working.

Let’s take a closer look at the following solutions and see if they help you.

What is the use of WUSA EXE?

Wuse.exe does the following:

How do I fix one instance of WUSA EXE is allowed to run?

1. Windows Installer check-up

2. View your Event Log

3. Run Task Manager

4. Re-register Windows Installer

After running these commands,Only one instance of wusa.exe is allowed to runmessage should be gone.

5. Reinstall Windows Installer in Safe Mode

If this issue persists, you may want toreset the Windows Update Componentsand see if that solves the issue.

When running an update, momentarily disable any anti-virus software running in the background, for it may interfere with your connection.

We hope that these fixes were able to help you fix theOnly one instance of wusa.exe is allowed to runerror. In the meantime, let us know what othererrorsyou have stumbled upon recently.

Fix: Only One Instance of Wusa.exe is Allowed to Run#

What is the use of WUSA EXE?#

How do I fix one instance of WUSA EXE is allowed to run?#

1. Windows Installer check-up#

2. View your Event Log#

3. Run Task Manager#

4. Re-register Windows Installer#

5. Reinstall Windows Installer in Safe Mode#