Could not open "filename.psd" because the file is locked

[Joanne FS]

Not able to open open a few psds, getting this error

Could not open “RAM5DC_LH_edit.psd” because the file is locked, you do not have necessary access permissions, or another program is using the file. Use the ‘Get Info’ command in the Finder to ensure the file is unlocked and you have permission to access the file. If the problem persists, save the document to a different file or duplicate it in the Finder.

What we tried for this error resolution - 

1. Gave photoshop full disk access under the preferences

2. The issue is only for a few files and if the file is copied to a different location on the same file server, the issue is resolved.

3. Update the Photoshop to the latest version.

[Darthsaiyan]

This doesn't work for me unfortunately, the disconnect and reconnect to share does but I don't think jumping through hundred hoops is a fix :(... I'm totally losing confidence in Apple if they ignore pros.... pros work on networks, end of story. And Adobe's stance to not support this is such a cop out too... if they got involved with Apple, they'd get it fixed!

[Kevin Stohlmeyer]

Hi @Darthsaiyan this has been an issue with Macs for over a decade. I don't expect a solution from either anytime. The permanent solution for businesses is to invest in a DAM system to allow checkout/checkin of assets without read/write issues.

[Darthsaiyan]

I've never had this issue on Intel. So as far as I'm concerned, it never has been until M chips. I've been working on mac for way over a decade too. I've always used NAS shares (Synology). And sure, there was some trouble and slowdowns browsing Samba share around Lion, but it was never preventing me from opening and saving files on Intel.

[Kevin Stohlmeyer]

It has gotten worse with OS updates and more security requirements, but it's always been an issue.

When using NAS if they are formatted properly (Mac Journaled not ExFat) it helps tremendously.