P: Photoshop 27.4 (GA) Export As says "An unknown error occurred."

Your feed back is VERY much appreciated. Thank you! 

Does Adobe even look at these posts?  I literally live in PS daily.  It is essential to my business. But lf this shit keeps up with zero updates, I’m seriously looking elsewhere.  Im so sick of this big company ruling my existence with their garbage updates.

Can confirm - same issue for me, Photoshop for Mac, v27.4.0, MacOS Sequoia 15.7.3. 

Super pain in the butt.

I have the same problem, I cannot export in jpg format, I have the same message, Whenever you try to export artboards with 'Exports As' and choose JPG, it shows unknown error in all of them. Doesn't matter which way you try to do this or format - the export window is frozen (grey) - not JPG or PNG or others. For this reason I need to use Photoshop version 2025.

Hi, Nikunj

Came here because I’m having the opposite problem of Lina. I still use legacy “Export As”, and it stopped working. Current “Export As” setting works, but I’m not sure it delivers a file with the same quality (if you can tell if I’m wrong, would be nice). 

Not sure if the issue started after an update, as I don’t use PS often, but I’m positive I didn’t change any setting. 

Attached are the System Info in a txt file, and a printscreen of the Export As window with the error.

Thanks and regards

I’m considering rolling back. Legacy Export As was better for JPGs as you could save JPG quality up to it’s maximum which is “12” Now, Legacy Export As DOES NOT work and you can only save JPGs up to 7 quality in Non-legacy Export As. You will get better quality with a quick “Save As” which wasn’t true before. Lame!

I require higher resolution images for model training. This is unacceptable! Fix it in the next version.
How do I roll back in the meantime?

This issue was reported a month ago on the beta version, and still got through to the final release.

Same problem here. The problem lies with the update to version 27.4. I rolled back my version to 27.3.1 and that one works fine. This is the best solution for now until there is a fix.

I found that this happens when the “use legacy” option is selected. I have not been able to find a workaround except turning that setting off and losing several export file formats.

Hi ​@antoniotand, there are several steps we can take you through to fix this but it would help to show us screenshots, as ​@D Fosse suggests, or to let us know what steps you’ve already taken. We also need to know what Photoshop version you are running and on what operating system. Have you reset your Photoshop preferences? Are you launching Photoshop from the Creative Cloud Desktop app or directly from a shortcut? Have you checked to see if there is an update for your GPU driver? The more you can share with us, the sooner we can help you get back to exporting images.