The latest version of Microsoft Edge offers the ability to open Microsoft Office files directly in the browser. Unfortunately, this feature is not yet compatible with Blackboard and you may receive a 404 error message saying "404 - File or directory not found. The resource you are looking for might have been removed, had its name changed, or is temporarily unavailable".
As of this time, there is currently no known timeframe for a fix on this issue. Users may use either Google Chrome or Mozilla Firefox, or you may do a workaround by turning off the setting in Edge to open files directly in the browser.
To turn off the setting in Microsoft Edge, click the 3 dots in the upper right hand corner and then click on Settings.
Then, turn off Open Office files in browser.