Inspiring

Answered

Cannot Open Photoshop 26.9 on Mac Studio running Mac OS 15.6 Sequoia with M2 Ultra chip

Forum|Forum|7 months ago
August 12, 2025
4 replies
1254 views

The subject says it all.

macOS

Correct answer panther creek

Try also C:\Users\[your user name]\AppData\Roaming\Adobe\UXP\Plugins\External

I'm on a Mac so that won't work.
Anyway I found out that the problems were with some OnOne plugins. When I removed them everything was fine.
Now I'll let OnOne know some of their plugins don't work on a Mac with OS15.6

Jeff Arola

Community Expert

Do you have any third party plugins like OnOne?

You can look in for any installed third party plugins:

Applications/Adobe Photoshop 2025/Plug-ins

and

Macintosh HD/Library/Application Support/Adobe/Plug-Ins/CC

Here's an Adobe KB on the subject:

https://helpx.adobe.com/photoshop/kb/plug-ins-photoshop-troubleshooting.html

P

panther creekAuthor

Inspiring

Yes. I've moved all plugins to a desktop folder and PS still won't start. I also tried moving them one at a time.

M

M-H

Inspiring

Try also C:\Users\[your user name]\AppData\Roaming\Adobe\UXP\Plugins\External

Jeff Arola

Community Expert

panther creek,

Have you tried resetting the Photoshop preferences?

https://helpx.adobe.com/photoshop/using/preferences.html

Also try holding the Shift key while launching Photoshop to skip loading any third party or optional plugins, which may cause issues as well.

P

panther creekAuthor

Inspiring

Thanks. I already tried resetting the preferences. However, when I held down the shift key to skip loading 3rd party plugins, PHOTOSHOP OPENED! However, I don't know where to go from here to find out which plugin or plugins is the problem.

P

panther creekAuthor

Inspiring

When I tried opening PS without holding the shift key, it would not open. The splash screen was only open long enough to display "InnerLoop Plugins Loaded." I have no idea what they are, but they may be part of the problem.

P

panther creekAuthor

Inspiring

I updated to 26.9 about a week ago. I updated to Mac OS 15.6 two days ago. Nothing happens except the splash screen shows up for 5 seconds and disappears. The app doesn't open. No error message.

L

LAMY2017

Legend

My crystal ball says "maybe it's a permissions issue."

I didn't have a problem with Ps26.9 and MacOS 15.6 but maybe because I installed the OS upgrade before the Ps update.

Can't hurt to uninstall v26.9 and reinstall.

Out of curiosity, check activity monitor for one instance, maybe multiple instances, of the Adobe Photoshop 2025 process.

Enter 'Adobe Photoshop 2025' in the search window at the upper-right of Activity Monitor to screen out all other apps' processes.

You'll see three other associated processes (Web Content, Networking, Graphics & Media).

Larry

P

panther creekAuthor

Inspiring

Thanks. I'll look at the activity monitor. BTW, I've performed all of Adobe's suggestions to try to fix this type of problem to no avail, including multiple uninstall/reinstall sequences of both Photoshop and Creative Cloud.

L

LAMY2017

Legend

When did this problem start happening? I'm sure your system meets the system requirements.

Have you recently upgraded to v26.9? What are the symptoms? Error messages?

Larry

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