What is a runtime error?
A runtime error is a software or hardware problem that prevents a program from working correctly. Runtime errors might cause you to lose information in the file you're working on, cause errors in the file (corrupt the file) so you can't work with it, or prevent you from using a feature. Unlike stop errors, runtime errors don't typically cause Windows or a program to stop working.
Runtime errors can occur if you are running two software programs that are not compatible, if your computer has memory problems, or if the computer has been infected with malicious software. If a runtime error keeps occurring, try these troubleshooting steps: