Windows 10: Big .tmp files in %temp%

Hi, recently I noticed that i need more space on my C: drive and I found a lot of big .tmp files in C:\Users\Username\AppData\Local\Temp folder [from 500MB to 800MB]. The problem is that the Windows is showing 16GB of Temp files, but disk cleanup can delete only 25MB, Any suggestions? I asked for help in r/techsupport and what i figured out was just deleting these files. I deleted some of them and It seems that they are reappearing sometimes.

Is there a way to check why are they creating or which process is doing it?

submitted by /u/Fluffpai
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:)

 

Temp and TMP and Temporary Internet Files locations

You may also change this in the registry but I wouldn't advise it unless you know exactly what you are doing. Make sure you back up your registry and computer first before you make any changes to the system of this kind of nature. Here is how to do this.

Win + R then type regedit in the run box. Go to the HKEY_LOCAL_USER and expand it. Look down this list and find CONTROL PANEL, expand it and click on Environment. You will see key entries TMP and Temp on the right. Select then right click on them and select
modify. Change them to, for example: F:\Temp, or which ever drive you wish to use as a temp drive. Make sure that you change the value for both TMP and Temp.

 

Deleting tmp files in C:\Windows\Temp

Hello

Should I be deleting .tmp files in C:\Windows\Temp?

If so, when I try, I get a message saying I need administrator permission. As a user, I am an administrator. Even if I log on as "Administrator," I get the same message saying I need administrator approval. I notice the files are marked "read only." But
if I try to change that in the Security tab, the options are grayed out.

Any suggestions or advice?

Thanks.

 

Temp and TMP and Temporary Internet Files locations

Technical Level : Intermediate

Summary

Environment variables are a way to store configuration data, two environment variables emerged as the front-runners for specifying where temporary files should go: TEMP and TMP.

Details

The Summary is from:

https://blogs.msdn.microsoft.com/oldnewthing/20150417-00/?p=44213

It goes back to the days of CP/M

Temporary Folders are used by almost every program on a computer, either during the installation of a program, or for the operation of the app/program.

These are the default values of some of the more important Temporary Folders.

Temporary Internet Files:

Please see:

Change location of TEMP files folder to another drive

Start Internet Explorer.

On the Tools menu, click Internet Options.

On the General tab, click Settings.

Click Move Folder. [move only if not set to default, or you need to move to another drive]

Click the folder you created in Step 1.

Click OK, click OK, and then click OK again.

Restart your computer

and

Microsft Edge has become extremely slow

• 
  Open Internet Explorer.
  

• Click on the Gear icon, and select Internet Options.
• On the General tab, under Browsing History, go to Settings.
• On the Temporary Internet Files tab, click on Move folder. [move only if not set to default, or you need to move to another drive]

Default location is -

C:\Users\[UserName]\AppData\Local\Microsoft\Windows\INetCache\

i.e.->C:\Users\JoeCool\AppData\Local\Microsoft\Windows\INetCache\

See:

https://technet.microsoft.com/en-us/itpro/windows/deploy/usmt-recognized-environment-variables

TEMP-The temporary folder on the computer. A typical path is %USERPROFILE%\AppData\Local\Temp.

TMP-The temporary folder on the computer. A typical path is %USERPROFILE%\AppData\Local\Temp.

To check your values -> in Cortana type 'Advanced System Settings' (click on the best matched results)- Advanced Tab - Click 'Environmental Variables' button - make sure your TEMP and TMP show the variables above.

After changing the 'Environmental Variables' (Rarely necessary)->Reboot.

Run a Disk Cleanup with all the boxes checked in the final dialog box. (a good process to run occasionally, even if you are not making changes in 'Environmental Variables').

https://support.microsoft.com/en-us...-996f-99e02c7301c2/disk-cleanup-in-windows-10

https://support.microsoft.com/en-us/help/17421/windows-free-up-drive-space

Before messing with any 'Environmental Variables'; verify your backup on FileHistory, OneDrive, or some other method you use->

https://answers.microsoft.com/en-us...onto-the/a0977ed7-e796-405b-be25-fa41441fc4b0