Unreal Engine 4.26 Crashing, No Project Files open

Started the launcher this morning after restarting the computer and none of my project files will open, the launcher gets to the Splash title screen and once it reaches 100% it immediately crashes, same trying simply to get to the project file preview menu. I’m not sure what triggered this, tried updating GPU driver/rolling back to an old driver, to no avail.

I wanted to get some work done today but unfortunately this error is keeping me stumped. Any help welcome.

Error log on crash shown here:

Problem is relieved by restarting PC, but sometimes this just doesn’t work, still not certain what the failure point is.