Location is greyed out, i cannot remove internet explorer 11 addon after virus removal

I'm very pleased too to see you rid of those. So, that's what a registry fix can do. Congratulations on doing your first - but always be careful in there. It turns out I too have "B4F3A835-0E21..." in my registry, but only in one place (& later in a mirror)...

Let me see all the screens in which you have that one. (Make the screens as small as possible before taking a picture, so it posts larger. See how I scrolled the Class ID up to top, & dragged the bottom of RegEdit up.) For me, that one is not a BHO. But do not delete anything yet until further investigation.

=== EDIT 1:35 AM ===

Research indicates "B4F3A835-0E21..." belongs to MS Office. Did you install that or click to take the trial version? Let us let that one alone. If you are through with MS Office, uninstall it at... R-Clk START, Programs & Features ...& hopefully it will take the BHO with it. Others have tried & failed to be rid of that BHO with registry deletes. Perhaps they didn't uninstall Office first.

=== End of EDIT ===

Remember these in your search result 12? One of them is gone, one of them is "B4F3A835-0E21..." - what are the other three? They are not in my registry at all. I want to research those three as well. So, let me see your screens.

Are any of these mentioned in IE 11 at the "Manage Add-ons" screen? If not, it's an indicator they are illegitimate & possibly non-functional as well.

===  EDIT 2:04 AM  ===

BHO 02478d38-c3f9-4efb-9b51-7695eca05670 appears to belong to a Yahoo toolbar. Did you install that? Do you use it? Is Yahoo showing at Programs & Features? Is the BHO showing in IE 11's "Manage Add-ons"?

BHO 761497bb-d6f0-462c-b6eb-d4daf1d92d43 belongs to Sun Java by Oracle, looks like. That's a legit company. Did you download/install that? Programs & Features? Manage Add-ons?

BHO dbc80044-a445-435b-bc74-9c25c1c588a9 belongs to Sun Java too. Same questions.

===  End of EDIT ===

I checked my Windows Firewall... and this is what I saw.... And I couldn't remove it...

I have the 3 cumulative updates in my system but it has not self-corrected... I still can't click on the Location button.

All the bad BHOs are gone... I'm so happy. As a newbie to this, you made it sound so easy... Love what you did... YOU ARE THE BEST.......... a thousand thanks to you.

Here is the picture of the BHO under the one you told me to delete....

I love what you did... the first BHO is gone..

Thank you so much....

I'm excited for the deletion of the 2nd BHO...

Your the greatest....