Microsoft Security Essentials Problem

On Java...

What happens when you go to Control Panel > Java

Open the Java Control Panel > Update tab, and click: Update Now

Can you get Java 7 update 21?

See if Java 6 update 26 is listed inside Programs and Features

Click on the button inside type in Programs and features and press [ENTER]

If its still shows inside you may click on Java 6 Update 26 and click on Uninstall .

brato92,

You may be using a 32-bit browser!!

From Java:

Verify whether you are using 32-bit or 64-bit browser:

Internet Explorer
1.Launch Internet Explorer browser.
2.Click on the Help tab at the top.
3.Select About Internet Explorer which will bring up an information window.
If version of IE displays 64-bit Edition, then it is 64-bit IE, otherwise it is a 32-bit browser.

Firefox
To determine whether you are running on a 64-bit version of Firefox, use either of these methods.
•Check the About Firefox panel
•Type in the browser address about:support
If you are running 64-bit Firefox, it may be indicated as 64-bit (e.g., Win64); otherwise it is a 32-bit version of Firefox.

Java for 32-bit browsers:
Users should download 32-bit Java software, if they are using 32-bit browser on their 64-bit Windows.
For downloading and installing 32-bit Java on your system:
1.Go to: java.com: Java + You
2.Click on the Free Java Download button, and start the installation process

Source: Which Java download should I choose for my 64-bit Windows operating system?


Also try downloading FRST once again, so you can get rid of the folder that doesn't remove.

Lets try removing the Java 6 Update 26 using the Microsoft FixIt

Click on Microsoft FixIt to Download Microsoft FixIt

• Click on the Run Now button
  
• Click on Java 6 Update and Follow the prompts

Disregard

Yes that is why I changed it to the Microsoft FixIt from this link here Fix problems with programs that can't be installed or uninstalled

My browsers (IE & Mozilla) are both 32bit. I've successfully managed to remove old version of Java (version 6 update 26) from Progs and features, using Microsoft FixIt, as VistaKing said. I've also reinstalled Java with latest version (32 bit) and this time i have 'Update' tab. The only problem is that i still cannot download FRST again to delete that folder, their website is still down.
What should i do now?

Their website works

http://download.bleepingcomputer.com.../64/FRST64.exe