Windows users face an issue on their Windows 10, 8.1 and 7 system which shows Publisher has Detected a Problem whenever they try to open any file Publisher. The error occurs when a user try to access the file from externally and both of the files were created in publisher program. If it’s the scenario with you too then you can follow the methods I have mentioned in this article to fix this error.
Source : https://anchorslink.wordpress.com/2019/10/21/how-to-fix-publisher-has-detected-a-problem-error-on-windows/