Windows 10: What is the DTU folder inside Program Files and is it safe to delete its contents?

There is a folder called "DTU" inside my "Program Files" folder that weighs up to 4 GB. I tried to google what the folder is used for but found no useful information about it. What is it for and is it safe to delete its contents?

:)

 

Can't delete folder!

have you tried using safe mode to delete it? i dont know what you had in it, but i have tried to delete files that said they had nothing in them from the program files folder and it said "DUNK" and NO but i was able to delete them from safe mode

 

Can I delete this unknown file safely?

Well then simply erase (Shift + Del) the $RECYCLE.BIN folder of that drive, I just find it odd that Windows doesn't pick up the drive's recycle bin when you connect it.
And yes it's completely safe to delete the whole $RECYCLE.BIN folder, it wont affect any of the other files/folders on the drive, and whenever you delete (Del) another file it will be re-created.

 

Is it safe to delete the Temp folder in C:/Windows/Temp?

Yes, all *files* in the temp folder (not the folder itself) can, and should be, deleted periodically.

The temp folder provides workspace for programs. Programs can create temporary files there for their own temporary use. Each program should delete all its temporary files when it closes, but for various reasons it doesn't always happen (for example,
if the program crashes, it never gets to do this). That's why it's a good idea to periodically clean out anything left there.

Also note that there are some program installations which work in two steps. The first step concludes by writing temporary files and rebooting. The second step starts automatically after rebooting and needs to find those files there (and then deletes
them when it's done).

Other than doing it automatically when rebooting (that would interfere with installations like the kind I described), it's always safe to delete the contents of the temp folder. Because it's safe to delete any temp files that aren't open and in use
by an application, and since Windows won't let you delete open files, it's safe to (try to) delete them at any time. If any fail to delete because they're open, they'll either be deleted automatically when the app using them closes, or you'll get them the
next time you delete manually.

Some people may suggest that you reboot before deleting anything, but that's not necessary, for the reason described above (on the other hand, it doesn't hurt to do it).