Hopefully this will be of help to Adobe in a quick resolution of the problem.This type of problem can be quite complicated. I provide a more detailed description, related files inclusive of resaved copies that were opened successfully in Lightroom Classic, ThumbsPlus 10, and Luminar 4, and a video illustrating the workflow in a folder that may be accessed at PS2022-v23-astroTIFFfail. In essence, the workflow from original file to conflicting file is Deep Sky Stacker 32-bit/ch TIFF > Photoshop to edit and save a 16-bit/ch flattened TIFF > Starnet++ to process and output a starless image also in 16-bit/ch TIFF > Photshop file open failure. I have encountered the same problem described here, but similar to others in this thread, the TIFF files that Photoshop 23.0 cannot open are produced as output from an astrophotography image processing application called Starnet++. This is one of the comments in the thread. It seems the problem might not be Photoshop, but Starnet++. My mistake, people are having problems with Windows too. RAM can't be added to the Air Macbooks of my vintage. I don't use PS on my Macbook Air as it only has 4GB RAM and is circa 2013. My doze installation of PS2022 also has no problems whatsoever. That's interesting I hadn't grasped it was Mac they were having issues with. Looking at the comments closer, it seems to be a Mac issue, not a Windows issue. Tiffs saved from last year converted in Pixinsight also opened with no problems. I have also saved as a tiff in Pixinsight and had no problems opening in Photoshop.
I clicked on the link and had no problems opening the files the guy attached.
You are able to submit the file that you can't open in Photoshop to the Adobe link. If you have issues then goto the link above and have a read through. There are workarounds but Adobe have been notified. It may have crept in with an earlier update to 22.5.2 apparently. I personally am not seeing any issues around this at all but post the Adobe forum thread for persusal. Some people are reporting that since the upgrade to Photoshop 2022 (confusingly internally known as PS 23.0) they are experiencing difficulty opening TIF or TIFF files.
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