disk space problem ?

kenobi,

First, let's get rid of your malware/virus problem.

Follow the procedure which follows precisely.

After following the procedure, feel free to remove Microsoft Security Essentials using Control Panel | Programs and Features
then reinstall Kaspersky.

In your case you must, you must totally and complete remove Kaspersky Internet Security including its firewall where the insstructions say to remove antivirus software and firewall.

Personally, I think you will find the performance of MSE and the Windows firewall to be more than adequate. I'm a former user of Kaspersky.

VIRUS and MALWARE REMOVAL / PROTECTION

1. Download MalwareBytes. Malwarebytes
2. Disconnect from the Internet.
3. Disable your present antivirus software and firewall.
4. Remove your present antivirus software and firewall.
5. Install and run the MalwareBytes Quick Scan (remove any bad guys). 3min 29secs on my laptop.
6. Reconnect to Internet.
7. Update MalwareBytes.
8. Run malwarebytes quick scan again.(remove any bad guys). 3min 38secs on my laptop.
9. Run MalwareBytes full scan. 16min 8secs on my laptop. With large,full disk ~2hours.
A. Disable your present antivirus software and firewall
B. Remove your present antivirus software and firewall
C. Download Microsoft Security Essentials.
http://www.microsoft.com/security_essentials/
D. Run Microsoft Security Essentials. Quick Scan - ~8 min on my laptop.
E. Run Microsoft Security Essentials. Full Scan - ~ 1hr 50 min on my laptop.
Now I advise you to uninstall MalwareBytes and only install again when and if you need it.
Why?, you ask. Leaving MalwareBytes installed slowed my system. AutoRuns showed MalwareBytes processes running even after exiting from MalwareBytes.

Kenobi,
Your C partition is fine. No need to enlarge. Now if you were going to store all of your libraries on C then you would need to enlarge it.

Just as an example, this is being written on a laptop with only one partition C.
That partition is 119 GB BUT I'm only using 31.1 GB of that space.

Tepid said:

Try this app,, it will show you where all your drive space is being used at.

WinDirStat Portable

I ran this software and said to me that kaspersky (sandbox) uses about 28.8 GB. Wow!?...

@Tepid: Thank you for the link/software. I, now, know which is causing my problem.

@all: Thank you for the time spent with my problem ! I hope you have a good day. :)