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AVCertClean 0.4

Can't install a security program? Try this

by Mike Williams

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License: Freeware
Operating Systems: Windows 10, Windows 7 (32 bit), Windows 7 (64 bit), Windows 8
Languages: English
Software Cost: Free
Date Updated: 13 June 2017
Watchlist: Add download to my watchlist
Downloads To Date: 101
Developer: Jerome Boursier
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Can't install a security program? Try this

Malware will often try to block security software from running, and one of the ways it does this is by adding their code signing certificate to Windows' "Untrusted" list.

If you try to run a program with an untrusted certificate, Windows displays a message like "this program has been blocked for your protection", or "an administrator has blocked you from running this program". (These messages can also appear for other reasons.)

AVCertClean is a simple program from AdwCleaner and Malwarebytes developer Jerome Boursier which scans the Untrusted Certificate list, and removes any items which belong to trusted antivirus providers.

The process is almost instant. A text log is created with a report and opened in your default plain text viewer (Notepad, probably). If nothing has happened, you'll see a message telling you no certificates were found in the untrusted list. If the program has removed something, it'll tell you exactly what, and if you close the file and reboot you should be able to install your security software.

Please note: while AVCertClean is easy to use, it's also possible to do the same thing without using any third-party software. Run certmgr.msc, browse to Untrusted Certificates and check any folder under that. Look for certificates which relate to the security software you can't run. If you see anything, deleting it might solve the problem, though keep in mind that deleting the wrong certificate will also make you less secure. Don't do anything unless you're confident it's the right decision.


A simple program which could help you install blocked security software and clean up your PC.

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Spotlight: Free Full Software

WhatsApp Messenger 2.17.42

Free Full Commercial Software

WhatsApp Messenger is the world's most popular instant messaging app for smartphones.

You can use it to send and receive text and voice messages, photos, videos, even call your friends in other countries, and because it uses your phone's internet connection it might not cost you anything at all (depending on whether you'll pay data charges).

It's easy to set up and use. There's no need to create and remember new account names or pins because it works with your phone number, and uses your regular address book to find and connect you with friends who use WhatsApp already.

You can talk one-to-one or in group chats, and because you're always logged in there's no way to miss messages. Even if your phone is turned off, WhatsApp will save your messages and display them as soon as you're back online.

There's plenty more (location sharing, contact exchange, message broadcasting) and the app is free for a year, currently $0.99/ year afterwards.

What's New in Version 2.17.42

• Pin chats to the top of your chat list, so you can quickly find them. Just swipe right on a chat and tap the pin icon.
• You can now send documents of any type. To send a document, open a chat, tap attach — document. 
• When you receive multiple photos, you can now tap and hold on the group of photos to quickly forward or delete all of them.