Microsoft Windows Runtime errors can be caused by a lot of different problems with the computer. Follow the steps below to help find and fix all Runtime errors.

If you’re getting a runtime error code and error message (e.g., “Runtime error 75 path/file access error”), skip to the runtime error listing for a listing of runtime error codes and errors.

Conflict with TSR or another running program

If you’re encountering a runtime error message in Windows, ensure that the issue is not being caused by a third-party program or TSR by end tasking all open programs.

  • How to remove TSRs and startup programs.

If, after end tasking all TSRs, you still have problems in Windows 95 or Windows 98, check autoexec.bat and config.sys for programs loading that are causing your issue. Then, temporarily disable these programs by renaming the files. Follow the instructions below for more information.

  • Boot to MS-DOS.
  • Once at the MS-DOS prompt, type:

cd\ ren autoexec.bat autoexec.ch ren config.sys config.ch

  • Once completed, reboot the computer.

Software issue

If your issue persists, the program, utility, or game causing the runtime error may have issues. Verify through the developer’s website that all available updates or patches are downloaded and applied.

If no patches or updates are available, uninstall and reinstall the program that is causing the issue. If you are having a runtime error in your operating system, reinstall the operating system.

Add-on, plug-in, or other extra software

Many runtime errors are also caused by other add-ons, plug-ins, or extra software installed on the computer. If you have any additional software associated with the program causing the error, update or uninstall it, and see if that resolves the issue.

Computer virus

Because computer viruses and malware can tamper with the system settings or memory, it can cause a runtime error. If you are currently running a virus protection program on your computer, ensure it is fully updated with the latest virus definitions.

If you do not have a computer virus protection program, we recommend one be purchased or that a demo be temporarily downloaded to scan your computer hard drive for viruses.

Memory issue

Finally, if you have followed all the above recommendations and are still getting runtime errors, you may be encountering a hardware or memory related issue. We recommend you first contact the developer of the program causing the issue for any possible solutions. If no solutions are found, we recommend you contact the computer or motherboard manufacturer for additional recommendations or service.

  • How to fix low memory and out of memory errors.
  • Computer companies and contact information.

Runtime error listings

Below is a listing of Microsoft Windows and Windows software runtime error codes and related Runtime error messages. Each error has additional information on what’s causing the Runtime error and how to fix the problem.

  • How to remove TSRs and startup programs.
  • How to fix low memory and out of memory errors.
  • See the runtime error definition for related information.
  • Computer virus help and information.
  • Microsoft Windows help and support.