I'm not a dev, but my work experience teaches me this is probably a coding or tools-related problem. And resetting part of Windows isn't the first step to fix it.
Replying to most threads with a pre-posted video can be a disservice. What a few folks forget about the 80/20 rule -- is when to...
BitLocker is proprietary, it's Windows encryption product. Non-Windows systems can't open BitLocker volumes.
Open source vs. closed is a different argument.
W10 & 11 share the same product key, for any given edition. W10 Pro = W11 Pro.
For a clean install, Setup will detect the Dell's OEM product key and automatically use it for activation. MS may have already associated the PC's HW ID with a digital license for Pro (if you were online with W10)...
Windows Photos app (2024.11050.3002.0) does require WinAppRuntime 1.5.
Presuming your Photos app isn't corrupted, you should be able to update default file associations thru Settings / Apps / Default Apps / Choose defaults by file type.
ISO's are filesystems contained inside a volume. It takes virtually no time to mount them. More likely, if your instructor included a few VM's, those are large single files which your current real-time scanner (Defender?) might take a long time to scan through.
I've been playing with Windhawk. While its installer & UI are a bit slow, it's free and has modules for restoring the classic Explorer Ribbon, and hiding Recommended items from the Start Menu.
Do you have a bundled 3rd-party Anti-Virus product? It might be blocking it. Another way to check if this ISO isn't corrupt, is to open the file with 7-Zip and browse the contents. That won't answer the question of why it's not mounting, but can confirm if the ISO's valid.
You need to have Admin rights, in order to create a Scheduled Task. The original script used a loophole to subvert the task's run-time identity to be TrustedInstaller. But the current version only needs to run the task as SYSTEM.
The script doesn't have any more power than you in a Admin...
For the impatient crowd:
vivetool /enable /id:47921515,47921574
https://www.elevenforum.com/t/use-vivetool-to-enable-or-disable-hidden-features-in-windows-11.20291/
There's nothing special about the elevation code. Some devs do elevation checks in the "wrong way", by running a privileged command and checking the exit code for failure. Since we're using PS, it's more direct to check if we have the Administrator role. Otherwise, it's the normal -verb Runas...