Lightroom 'cannot save changes to this location' error after Windows 11 laptop sleeps/hibernates

Sounds like Windows is treating the SSD as removable media.

perhaps see:

https://www.easeus.com/computer-instruction/windows-10-thinks-my-hard-drive-is-removable.html

Following - I'm having the same sort of issue...  I travel with a limited laptop and external drive, which has worked very well for me. I import photos to a "TRAVEL" catalog on an external drive, organize them and keyword them nightly while the trip is fresh in my mind, and delete the obvious files I wouldn't work with. When I return home it's a simple matter of plugging the external drive into my desktop, importing the new folders, and getting to work editing. With all that said - I recently bought a Sandisk Extreme Portable SSD to use in place of the external drive I lug around. It's SMALL, and LIGHT. And it's advertised to be rugged, so it's ideal for travel where it might be rough handled. I copied my travel catalog and photos folders from my external drive to the new Sandisk drive, plugged the Sandisk drive into my laptop and... I can't open the TRAVEL catalog. I get an error message from Lightroom stating that the catalog cannot be opened because Lightroom cannot save changes to this location. The message further states that catalogs cannot be stored on network volumes (understandable), removable storage or read-only volumes. I've used the extent of my computer skills to ensure that the drive is not locked (I removed the locking software that shipped with the drive), and that the attributes of every folder and file on the drive are not read only. Has anyone had any luck using an external SSD to store and use a catalog file? Or perhaps a work-around to the error?