Can't open apps because my drive is full?

Hello! I've recently downloaded Creative Cloud to use the apps for college and personal purposes. However, I've run into an issue that prevents me from using any app at all.

Installing is not a problem and even in the CC app I've specified that I want all apps to be installed on my D:\ drive, as that driver has the most available space (250GB/871GB).

However I cannot open any of the apps because apparently there is not enough room to initialize?

I use W10. My system's in Dutch, but here's a screenshot of the error message I get.

I get this message for every app, so it's not only an issue with Photoshop.

I could use the help! I want to be able to work at my own computer ASAP.

Thank you in advance!