How to fix Windows runtime errors
If you're getting a runtime error with 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.
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.
Conflict with TSR or another running program
If you are encountering a runtime error message while in Windows or above ensure that the issue is not being caused by a third-party program or TSR by end tasking all open programs.
If after "end tasking" all TSRs, you continue to experience the same issue under Windows 95 or Windows 98, check autoexec.bat and config.sys for any programs being loaded that may be 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\ <press Enter>
ren autoexec.bat autoexec.ch <press Enter>
ren config.sys config.ch <press Enter>
- Once completed, reboot the computer.
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 have been 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 that is installed onto the computer and is associated with the program generating the error. If you have any additional software associated with the program causing the error, update or uninstall it, and see if that resolves the issue.
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, it is recommended one be purchased or that a demo be temporarily downloaded to scan your computer hard drive for viruses.
- Additional information about computer viruses is on our virus help page.
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 that 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.
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 the cause of the Runtime error and how to fix the problem.
|Code||Runtime error||Additional information|
|5||Illegal function call||Program error, verify the program has all the latest updates. If updated, try reinstalling the program. If you continue to have the same errors, contact the software developer.|
|6||Overflow||Program error, verify the program has all the latest updates. If updated, try reinstalling the program. If you continue to have the same errors, contact the software developer.|
|7||Out of memory||Caused when the computer does not meet the program's system requirements or too much memory is already being used for the program to run. If your computer meets the requirements, first try reinstalling the program to make sure it's not an issue with the program installation. If this does not resolve your issue see out of memory troubleshooting steps.|
|9||Subscript out of range||Program error, verify the program has all the latest updates. If updated, try reinstalling the program. If you continue to have the same errors, contact the software developer.|
|11||Division by zero||Problem with a math formula in the program or the program's code. Verify no software updates are available for the program causing this error.|
|13||Type Mismatch||Make sure your system regional settings are set up correctly and that the program you're running is made for your version of Windows.|
|14||Out of string space|
|20||Resume without error|
|28||Out of stack space||Caused by a program or memory error. First try going through the out of memory troubleshooting steps.|
|35||Sub or Function not defined|
|48||Error in loading DLL||Caused with a bad installation or an issue caused after another program is installed that replaced the program's DLL. Close all programs and TSRs and try installing the program again.|
|52||Bad file name or number|
|53||File not found||File required by the program to run is not found. Program needs to be reinstalled or missing file(s) need to be copied back to the computer.|
|54||Bad file mode|
|55||File already open||Program or file associated with program is being used and program does not have access to use it. Try closing all open and background programs and run program again.|
|58||File already exists|
|61||Disk full||The disk, for example, the hard drive does not have enough space for the program to run or store copied files. Free up disk space on the computer hard drive.|
|62||Input past end of file|
|63||Bad record number|
|64||Bad file name|
|68||Device unavailable||A hardware device or necessary requirement for the program is not being found. Verify all hardware and software required by the program is installed. If you continue to have the same issues, verify the latest updates are installed for the program as well as any hardware device the program needs.|
|70||Permission denied||The location of where the program is being copied to does not have proper rights. Or a file that is trying to be copied over because it's currently being used. Try closing all programs and TSRs and running/installing the program again.|
|71||Disk not ready||Verify you have proper rights.|
|74||Can't rename with different drive|
|75||Path/File access error||Program does not have rights or access to a file. Often this is caused when a program is trying to access a network file it doesn't have proper access to either because of network privileges or something is blocking the program. For example, if the file is being used by another program or is read-only.|
|76||Path not found||Directory of where the program needs to be copied to or files associated with the program need to be copied to is missing. Try reinstalling the program.|
|91||Object variable set to Nothing|
|94||Illegal use of NULL|
|339||A file is missing or invalid||An associated program file is missing or corrupt. Try reinstalling the program.|
|429||Object creation failed||Program is corrupted, try reinstalling the program generating the runtime error.|
|438||No such property or method|
|439||Argument type mismatch|
|901||Input buffer would be larger than 64 K.|
|902||Operating system error||Verify the program is compatible with your version of Windows and has any software updates.|
|903||External procedure not found|
|904||Global variable type mismatch.|
|905||User-defined type mismatch.||A setting either in the program shortcut or being defined by the user is correct. Try running the program without any additional settings or variables.|
|906||External procedure interface mismatch.|
|1001||Out of memory||Computer does not meet the program's system requirements or too much memory is already being used for the program to run. |
If your computer meets the requirements, try first reinstalling the program to make sure it's not an issue with the program installation. If this does not resolve your issue run through the out of memory troubleshooting steps.
|1025||DLL is not supported||Bad installation or an issue caused after another program that is installed and replaced the program's DLL. Close all programs and TSRs and try installing the program again.|
|6025||Microsoft Windows r6025 runtime error.|