How do I fix "The necessary prerequisites have failed to install" error, or SU-PQR error?

If you receive a Self Update Failed error message that provides an error code like, or similar to, SU-PQE1223 or SU-PQR1603, this article contains steps that could resolve this.

1. Run the Epic Games Launcher as an Administrator. Refer to: How do I run the Epic Games Launcher as an Administrator

2. Update Windows. Refer to the Microsoft article: Update Windows (Opens in a new tab) 

3. Install the latest version of the Epic Games Launcher from our website (Opens in a new tab) by clicking the Download button in the upper-right corner.

4. Reinstall Microsoft Visual C++ Redistributable. Refer to the Microsoft Visual C++ Redistributable latest supported downloads (Opens in a new tab)

5. Confirm you have read/write access to the folder

   1. Navigate to your selected install location.

   2. Right-click and select Properties.

   3. Select the Security tab.

   4. Select your username in the Group or user names box.

   5. Verify that there is a check under Allow beside both Read and Write in the Permissions box.

6. Add the Skip Patch command line

   1. Close the Epic Games Launcher entirely.

   2. Right-click on the Epic Games Launcher shortcut. 

   3. Select Properties.

   4. At the end of the Target line, insert the following with a space:” -SkipBuildPatchPrereq”

   5. Click on Apply.

   6. Right-click on the Epic Games Launcher shortcut.

   7. Select Run as Administrator.

7. Temporarily Disable Anti-Virus or Firewall

   These applications protect your device. Even if the issue is resolved, make sure to re-enable them. If one of those caused the issue, reach out to the application developer.