Artwork Photoshop formar error

[TTpay002]

After upgrading Windows 8.1 to Windows 10 i cannot open one very important Photoshop format file. Getting 'Unknown Phoroshop format' error. I could open it before!

Any thoughts please?
Thanks

 

[Injunction]

Look at the reply by microsoft here
https://answers.microsoft.com/en-us...o/113b600a-3db3-4dca-88da-cdd70768c2ed?auth=1

I would explain it but no need

P.S. if none of those work just try either reinstalling it or restarting your computer

 

[oliver555]

This could be caused by:
a) The file is not really a PSD file but is rather some other format with an incorrect .psd extension.
b) A corrupt PSD file.
You could try the menu option Open As and select the file's correct format assuming option.
Also take a look at this repair psd file link to see if it may be related: http://www.psd.repair/