How to Repair Runtime Error 91 in Windows 10 Computer

Runtime error 91 is a typical Windows error that can occur randomly on your system. This error is mainly caused by programs that try to use the DCOMCnfg.exe file on your PC, as this document is often corrupted, corrupted, or not as securely prepared as you might expect. If you see a Runtime Error 91, it is imperative that you deal with the various problems that it can cause.

Runtime Error 91 does not usually occur when you implement a product, but only when you try to use the implemented programming. The 91 error regularly occurs when the connection to the loaded product is broken or missing.

What causes runtime error 91

A runtime error 91 usually occurs when you try to use a program that contains a corrupt/incompatible type of code. This problem can be caused by a missing DLL, a corrupted file, a virus infection, or an error in the registry. In particular, there is probably an issue with DCOMCnfg.exe that is preventing your system from loading the files it needs to run.

How to resolve the runtime error 91

Scan your computer for malware

  1. Click the arrow on the taskbar and double-click the Windows Security icon.
  2. Select Virus and Threat Protection.
  3. Select the scan options under the Quick Scan button.
  4. Select the Full scan option and click the Scan now button.

Reinstall the problem application

  1. Type Control Panel in the Windows search box and press Enter.
  2. Go to Programs -> Uninstall Application
  3. Select the application from the list, right-click and select Uninstall.
  4. Then reinstall the application.

Update Windows

  1. Right-click on the Start button and select Settings.
  2. Select Update and security.
  3. Click Check for updates.
  4. Wait for Windows to download and install any necessary updates.
  5. Restart your computer.

Frequently Asked Questions

  1. Reboot your computer.
  2. Update the program to the latest version.
  3. Uninstall the program completely, then install it again.
  4. Install the latest version of Microsoft Visual C++ Redistributable package.
  5. Use SFC scan now to restore damaged Windows files.
  6. Run System Restore to return the computer to its previous state.

Because the SET statement was omitted, this line of code causes a runtime error 91. Solution: To avoid this error, always remember to use the SET statement to assign an object variable.

Error: "Runtime error 91". - is a Visual BASIC error that means "Object variable not defined". This means that the object was not created using the "Set" command before it was used. Remedy: Always use the "SET" statement to create a new object.

  1. In Windows search, type "Control Panel" and press Enter.
  2. Go to Programs -> Uninstall Program.
  3. Select the application in the list, right-click it and select Uninstall Reinstall the problem application.
  4. Then reinstall the application.