Over 50GB of Temp Files in AppData Subfolder

topgundcp said:

Agree. However, I'd rather use the portable version with no installation required for something I rarely use:
TreeSize Free Portable | PortableApps.com - Portable software for USB, portable and cloud drives
Or
WizTree Portable finds the files and folders using the most disk space on your hard drive

Wow - WizTree is fast. Unfortunately it doesn't show the compressed size. As I'm writing a program at the moment to make a minimal sized windows for my VMs I need to see the actual disk used - not the nominal size. I probably run TreeSize 10 times a day - it isn't perfect as it gets terribly confused by junction points but it is the best I've found so far (except it sometimes vastly underestimates disk use).

Compare the two - TreeSize says my Windows directory is 3GB (about right if I look from another external system), WizTree says it is 16.9GB which it definitely isn't. Program Files is 2.3 GB or 87.7MB - take your pick.

p.s. explorer is not correct either

If you don't use Compact /CompactOs:always (or your upgrade didn't do it for you) then WizTree looks better.

Stumbled upon this old thread and adding my experience here. CCleaner kept telling me about +50Gig of data in %AppData%/Temp, I deleted it several times but it always came back. So I decided to keep it for a while to see what happens next and guess what... Windows 10 updated a few days ago on my machine. So I guess the data was what the OS downloaded in the background to update itself.

Since the update everyhting is back to normal, CCleaner reports now only 1Gig of usual crap like some memory dumps, internet cache, small amount of temp data etc

snickie said:

In the folder appdata there are folders local and temp. I have a shortcut to this temp folder on my desktop to quickly access and delete files here. I've done this cleaning manually for over five years now with Windows 7 and now Windows 10 without any problems what so ever.
Many programs use this folder as a temporary storage and if you don't clean it it will eventually fill up your drive.

I have done the same thing for years. Appdata/Local/Temp. I always clean that out when I do my normal disk cleanup maintenance with no issues at all.

stealth2920 said:

I have done the same thing for years. Appdata/Local/Temp. I always clean that out when I do my normal disk cleanup maintenance with no issues at all.

One thing to note with Disk Clean up, it will only clear files/folders from Appdata\Local\Temp if they are more than a week old, just in case they might still be needed. Manually deleting them all, as others have said, doesn't seem to cause any issues.