Windows Security issue "Operation did not complete successfully" while opening document templates.

If you are getting the below Error Message:

This is due to Windows security restrictions, documents generated from a third-party application can cause such errors as "Document contains a virus", even if they do not and are genuine.

It is possible that you have downloaded a genuine file but window defender detected a false positive. This is a general issue while using the antivirus.

To avoid this issue there are two solutions:

1. Open the file directly with Microsoft Word

2. Add a windows defender "exclusion" to allow the files to be opened directly

Workaround: Open the file directly with Microsoft Word

To avoid the above message, you can open the file directly with Microsoft Word:

1. Start Microsoft Word

2. Click the File menu -> Open File, and select the file from your Downloads folder

More Permanent Solution: Add a Microsoft Defender Exclusion or disable microsoft defender

Go through the link share here which explains possible reasons for the error and also a different way to disable the window defender.

Link: https://softwarekeep.com/help-center/operation-did-not-complete-successfully-because-the-file-contains-a-virus

One more possible way to open such a document is you can go to the specific application and open the document directly