M370 no video with supported format and MIME type found
I have two identical installations of the M370. On one I did not get this error when I try to view an MP4 video on a website. It happens on one installation but not the other. It happens no matter if I use Edge or Firefox, I have deleted all cookies for both browsers, updated both browsers but nothing has solved the problem.
On the affected system if I download the file from the website the MP4 file will play. All other MP4 files work just fine. What am I missing?
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Care to post a link to that mp4?
There are a number of hits for this error message on the Internet.
Here is 1:
https://windowsreport.com/video-format-or-mime-type-is-not-supported/