We had some zip files that if content was unzipped with 7-zip the files were correct but not if unzipped with Windows explorer. I am struggling to remember what were the contents of the zip files I think it was some data that was loaded by our or third party application what would produce a crash if not unzipped correctly. I never got to the root cause because coworker told me to "fix" it by using 7-zip and was not bothered by it since then, only when I passed the knowledge to newer coworkers. It was happening still on Windows 10.