Hi Cnwh,
Thank you so much for your reply with the relevant information regarding this issue.
It would be great if you can let us know the exact error message that the others are getting while trying to open these files from their computers.
From the error description that you have mentioned, it seems that this could be due to some virus infection on the computer which might be corrupting
the file while you send it to the others. So, let’s make sure that the computer is clean from any virus or malicious software infections. For this, let’s boot the computer in Safe Mode with Networking and then perform a full system scan using Microsoft Safety
Scanner and check the result.
Boot the computer in Safe Mode with Networking and perform a Security Scan
In Windows, we can start the computer in different advanced troubleshooting modes to find and fix problems on the PC. One of such troubleshooting mode
is Safe Mode with Networking. Here we start Windows with a minimal set of drivers and services, including the network drivers. Please refer to the steps in this article to boot the computer in safe mode with networking:
***Advanced startup options (including safe mode)***
After booting the computer in Safe Mode with Networking, you may download and run the Microsoft Safety Scanner from this link:
***Download Microsoft Safety Scanner***
Important: When running a scan using an anti-virus program, any data files that are infected may be cleaned by deleting the file entirely, which means there is a potential for data loss.
Please get back to us with the results.