This just started fairly recently. I enter the password, and Word crashes with no error message. This happens with existing files that have opened fine for years. I can also create a new file, save it with a password, close it, then try to open it, and Word crashes. I have an up-to-date version of Office 365 on Win 10 Home. I have already reinstalled Office, to no avail. For what it's worth, Excel opens passworded files fine (I don't know if Excel and Word share a decryption module). Any ideas will be appreciated.