Photoshop: Your disk copy of image was changed since last opened or saved

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  • Updated 7 years ago
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  • (Edited)
Continually getting "Your disk copy of image was changed since last opened or saved" error in Photoshop. It's slowing down my business, and the error is a dead end...
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James McKenzie

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  • frustrated.

Posted 7 years ago

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Chris Cox

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Official Response
You get that message because some process (application, or OS function) outside of Photoshop has changed the file since it was last opened or saved by Photoshop.

This is important when working with other people - to know that the file has been changed and you may not be working on the latest version. And even working on your own system, you may have altered the file in another application and not realized that it was not updated in Photoshop.

Sometimes the process that caused this isn't obvious, and can be due to bugs in third party software. For example: one anti-virus program caused changes when it shouldn't have, a font management plugin recently fixed a bug that modified files after saving, and multiple times in the past we've seen bugs in MacOS and Windows cause changes in the file timestamp (those usually get fixed quickly).

Seeing this message is not a common problem, but some people do have problematic settings, applications, utilities or malware on their system that can cause this to happen more often.

Unfortunately, while the OS will tell Photoshop that the file has been changed, it will not tell us what changed the file. Photoshop is telling you all that it knows: that the file has been changed since Photoshop read or wrote it.