Hard Drive Full but No Files in Windows 10

Hard Drive Full but No Files in Windows 10
very strange issue, I shutdown pc and in the morning, my hard drive is nearly full without me adding any data? I show you what caused the issue.

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[Britec]

Very strange problem. Drop us a LIKE 👍

[ilSkull]

I didn't even know this problem existed, just came to this video to drop a like to support you. A lot of your videos have helped me in the past. Keep up the great work, man!

[edmilsonleandro]

Pro tip: if u don't find the "Local" folder, just the 2 others, do this: Win Key + R and type "%temp%. U'll be redirect to this folder, and there will be appData with the 3 folders.

[lhmtzol]

Thanks for this. I had a different problem downgrading from windows 11 to 10 I couldn't figure out why my hard drive had so much space taken up given the fact that I couldn't see anything and the installation was supposed to delete all files as far as I was aware but apparently it had just moved some files into a "Windows.Old" folder instead of deleting them. I figured this out with the app you showed in the video.

[smitajky]

Most times this is a pre install copy of windows files that are supposed to be deleted once installed. But it doesn't happen for some reason. It is always safer for the installer to not delete the files unless it determines the installation is successful. So even if it is successful any failure of the notification still causes the issue.
This has always been the case but in the past even a complete installation of windows is tiny compared to the disk space so it isn't always even noticed.

[frittiertesonnenstrahlen]

You just saved my life man. My Photoshop just crashed and after that my 200GB was gone. Thanks to your video I was able to delete those big files.

[CoMmAnDrX]

Bill Gates stored his Black Book on your PC for safe keeping from the misses.

[PaulRansonArt]

Thank you for this Brian. Just downloaded Tree Size Free and found a huge 128Gb duplicate video file in my C drive cache.

[lyfandeth]

I had a similar problem, when an email automatic backup program had an update bug. It was concatenating copies of all my email, instead of just updating new ones. Made a 40GB file, all by its clever little self.
I've also seen failed MS upgrades that left hidden copies of the entire old system, but 890GB is incredible. I'd be paranoid about malware.

[thetechplug]

Thank you for the tree size recommendation, it's what I used and found so many things using up my space.

[GrabASpriteB]

Simple, straightforward, and helpful! Found that an iTunes backup was taking 58gb of my 256gb C drive, and it was only accessible in the hidden AppData folder. Thanks!

[peterbowen]

I’ve had the same problem and it turned out to be an error log file that had not had its max size set.

[Wardropulous]

In my case, C:\Windows\CSC was the culprit. Apparently it's used by "Sync Center" to cache personal folders that are redirected to a network location such as a NAS, which I do. Folder Size Explorer wasn't showing this as the culprit, but TreeSize did, so the video was worhwhile in the end. I'll be using TreeSize from now on I think. I didn't have Sync Center configured to sync files offline, so these files had to manually cleaned up by taking ownership of that folder, changing permissions, and then deleting it.

[NoBetterTech]

A friend of me, has an external hdd, in hp 2014 (i think) PC shows the files and that's full, but in hp z620 shows only 4 files, i think of hdd ext manufacturer and is empty seems, is it maybe hidden files not shown in the z620(he purchased this after old user did ssd reset... used PC), ... or may be hp connected to usb 3 but hp z620 usb 2..?

[The_Server_ong]

You saved me. After getting through tons of garbage advice on google, you brought the actual solution I needed. Thank you

[tregotthesauce]

This app was a BIG help I couldn’t find out what was taking up so much space

[obsey]

This problem is very mysterious!
It is curious that some viewers have encountered this mysterious problem, but also do not have answers.
Doesn't it seem significant that the file name, of this temp file, appeared to be GUID generated?
Might it have been worthwhile to make a copy of the file name, since the source of the GUID might have provided some clues as to what application created it?

[ikannunaplays]

I have seen this happen many times in my life on many different file systems. The tmp file wasn't closed properly upon reboot, likely because the system rebooted so fast it's unable to finish before it happens, thus writing an incorrect file size to the MFT making the file appear to be 890gb when it's probably not.

[sirgumplez]

Great video! was able to clear up hundreds of gigs of runaway space on my 1tbssd

[likatz]

Good video, those files look like clipchamp files. They will build up quick in that video editing software especially if you are shooting in 4k videos