PDF "Not compatible with this version of Photoshop"

I have same problem.

João here!
Sometimes the problem is solved by removing any special characters from the file's name.
Special characters:
https://helpx.adobe.com/creative-cloud/help/sync-creative-cloud-files.html
"Filenames that contain special characters such as |, ", ?, <, >, /, *, or : are not synced. Nor are files with reserved names, such as AUX or Com1. If you receive an error, rename the asset filename to sync it to Creative Cloud. For more information, see Error: "Unable to sync assets."

Hope this process might work for someone having issue of psd or pdf not opening in current Photoshop version.

1. Try to collect and install Photoshop CS2 and ImageReady(CS2), its difficult to find ImageReady in 2024...

2. Open ImageReady > open your corrupt PSD file

it might take sometime to regenerate layers and open the file.

3. in that file some of the layers got corrupted. delete those corrupt layers and

4. "save as" with a different file name.

5. Then try to open with your current Photoshop version....

but in this process all of your smart objects (of older file) automatically got rasterized and converted into simple layer.

you have to rework on the lost layers or recreate some elements. it is better than recreating the whole design or file again.

One more thing to add here > huge and large files with multiple use of filters, effects or blend options might not open.

if this process worked for you just thank the divine power or whome you believed...

and if not worked try hard to recreate the entire design again.

wish you all the luck for your future projects.  

please go through my works:
https://behance.net/ranjanmahapatra

Ok I opened it up in Illustartor and saved as a pdf, I was then able to open it up in Photoshop, but I lost all my layers. So dont do that if you need your layers. 

Couldn't open "file_name.pdf" because the file is not compatible with this version of Photoshop

I am having the same issue. It say's not compatible with this version of Photoshop, but I made it with this photoshop. I am saving on a server and I have several other file I made with this same Photoshop all on the same server. This week I have had 2 seperate files that would not open with the same issue. All other files are opening. I need to work on these 2 files that I cant open. Please Help! 

Having the same issue here. Please update if any solutions arise. 

Same issue here and adobe wont seem to address it. Anyone have any luck with it since?

Same issue! 
I saved a Photoshop file (that I've worked on all day!) on the Creative Cloud at work, but now it gives the same error message when I try to open it on my home laptop, using exactly the same PS version. 

Same issue here. The file was saved locally. I tried multiple ways to access it. Adobe Team please solve ASAP