Skip to content

Why donate?

Which type of operating system are you running?

What is avastUI.exe?

avastUI.exe is part of avast! Antivirus and developed by AVAST Software according to the avastUI.exe version information.

avastUI.exe's description is "avast! Antivirus"

avastUI.exe is digitally signed by ALWIL Software.

avastUI.exe is usually located in the 'C:\Program Files\Alwil Software\Avast5\' folder.

If you have additional information about the file, please share it with the FreeFixer users by posting a comment at the bottom of this page.

Vendor and version information [?]

Product nameavast! Antivirus
Company nameAVAST Software
File descriptionavast! Antivirus
Internal nameAvastUi.exe
Original filenameAvastUi.exe
Legal copyrightCopyright (c) 2010 AVAST Software
Product version5, 0, 0, 0
File version5, 0, 677, 0

The following is the available information on avastUI.exe:

Product nameavast! Antivirus
Company nameAVAST Software
File descriptionavast! Antivirus
Internal nameAvastUi.exe
Original filenameAvastUi.exe
Legal copyrightCopyright (c) 2010 AVAST Software
Product version5, 0, 0, 0
File version5, 0, 677, 0

Digital signatures [?]

This file has a valid digital signature.

Signer nameALWIL Software
Certificate issuer nameVeriSign Class 3 Code Signing 2004 CA
Certificate serial number4009265cdb37d6b82d24d0b06f931857

Folder name variants

avastUI.exe may also be located in other folders than C:\Program Files\Alwil Software\Avast5\. The most common variants are listed below:

Hashes [?]


Error Messages

These are some of the error messages that can appear related to avastui.exe:

avastui.exe has encountered a problem and needs to close. We are sorry for the inconvenience.

avastui.exe - Application Error. The instruction at "0xXXXXXXXX" referenced memory at "0xXXXXXXXX". The memory could not be "read/written". Click on OK to terminate the program.

avast! Antivirus has stopped working.

End Program - avastui.exe. This program is not responding.

avastui.exe is not a valid Win32 application.

avastui.exe - Application Error. The application failed to initialize properly (0xXXXXXXXX). Click OK to terminate the application.

What will you do with avastUI.exe?

To help other users, please let us know what you will do with avastUI.exe:

What did other users do?

The poll result listed below shows what users chose to do with avastUI.exe. 67% have voted for removal. Based on votes from 45 users.

User vote results: There were 30 votes to remove and 15 votes to keep

NOTE: Please do not use this poll as the only source of input to determine what you will do with avastUI.exe.

Malware or legitimate?

If you feel that you need more information to determine if your should keep this file or remove it, please read this guide.

Please select the option that best describe your thoughts on the information provided on this web page

Free online surveys

And now some shameless self promotion ;)

A screenshot of FreeFixer's scan result.Hi, my name is Roger Karlsson. I've been running this website since 2006. I want to let you know about the FreeFixer program. FreeFixer is a freeware tool that analyzes your system and let you manually identify unwanted programs. Once you've identified some malware files, FreeFixer is pretty good at removing them. You can download FreeFixer here. It runs on Windows 2000/XP/2003/20008/Vista/7/8/8.1/10. Supports both 32- and 64-bit Windows.

If you have questions, feedback on FreeFixer or the website, need help analyzing FreeFixer's scan result or just want to say hello, please contact me. You can find my email address at the contact page.


Please share with the other users what you think about this file. What does this file do? Is it legitimate or something that your computer is better without? Do you know how it was installed on your system? Did you install it yourself or did it come bundled with some other software? Is it running smoothly or do you get some error message? Any information that will help to document this file is welcome. Thank you for your contributions.

I'm reading all new comments so don't hesitate to post a question about the file. If I don't have the answer perhaps another user can help you.

Bud McCall writes

0 thumbs

Hi, I have an older desktop that had Avast5. The Free time has ran out and I started to get pop-up messages that the machine was at risk so I used windows un-installer to un-install it. After removal I attempted to open internet using Mozilla but could not sign on. Then other programs would not open. I would get an error message program can't start because C:\AVas5|snxhk.dii is missing from your computer". I attempted to reload AVAST 5 from the recycle bin but it just disappeared. Now I can't get on line, can't open my security and can't use system restore. Can you help me??


# 5 Dec 2012, 11:59

busiga writes

0 thumbs

i need your help

# 24 Apr 2014, 4:27

Roger Karlsson writes

0 thumbs

@busiga: What problem do you need help with?

# 24 Apr 2014, 7:58

Leave a reply