Windows 10 image upload problem

I have a PC on AD that doesn't seem to like uploading images to various websites such as twitter.com and Monday.com. I have tested this on other PC's within the same network and they all work fine.

I have tried all the things I can think of including:
Multiple browsers (Chrome, Firefox, Edge)
Clearing cache
Trying different images (all within size limits)
Images located directly on desktop as well as on OneDrive
Firewall checked, nothing blocking it
Windows 10 and drivers fully updated.

Has anyone experienced anything like this? All thoughts welcome!
 
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