Why do password-protected Microsoft Office files open in Read-only mode with File Station?
Applicable Products
File Station
Scenario
When you attempt to open protected Microsoft Office files through File Station with the Edit with Office Online feature, the file opens in Read-only mode. This applies to Word, Excel, or PowerPoint files.
Limitations
This is a known limitation of the Microsoft Office Online platform that prevents users from editing password-protected files with Office Online.


Further Reading
Differences between using a document in the browser and in Word