Avast (Free) UI crash

Avast Free Antivirus / Premium Security
1

Every time I try to open the UI, it self-closes after a few seconds. I finally managed to get an event log error …

Log Name: Application
Source: Application Error
Date: 02/05/2018 00:30:53
Event ID: 1000
Task Category: (100)
Level: Error
Keywords: Classic
User: N/A
Computer: quik7
Description:
Faulting application name: AvastUI.exe, version: 18.3.3860.316, time stamp: 0x5acf4525
Faulting module name: OffFilt.dll, version: 2008.0.7600.16385, time stamp: 0x4a5bdac5
Exception code: 0xc0000005
Fault offset: 0x00021b61
Faulting process id: 0x1808
Faulting application start time: 0x01d3e1a46ce4deb6
Faulting application path: C:\Program Files\AVAST Software\Avast\AvastUI.exe
Faulting module path: C:\Windows\system32\OffFilt.dll
Report Id: afef25fd-4d97-11e8-a2f5-f46d044ba2d6
Event Xml:



1000
2
100
0x80000000000000

714847
Application
quik7



AvastUI.exe
18.3.3860.316
5acf4525
OffFilt.dll
2008.0.7600.16385
4a5bdac5
c0000005
00021b61
1808
01d3e1a46ce4deb6
C:\Program Files\AVAST Software\Avast\AvastUI.exe
C:\Windows\system32\OffFilt.dll
afef25fd-4d97-11e8-a2f5-f46d044ba2d6

Is there a super bright user who can tell me the cause and how to fix it (apart from changing my AV to something else, which doesn’t appeal)

2

Did you remove previous used AV using vendors removal tool?

Have you tried avast repair?

3

Yes, it was running fine until a few weeks ago (I only just noticed I could not start from the tray icon, so not sure when it died) … not sure what changed. Repair makes no difference, nor does complete removal and re-install … same deal, the UI will pop up for 2 seconds or so and then close. Most times there is not anything in the event log, it just vanishes. Sometimes I get a windows error message, but rarely.

4
  • OS…? (32/64 Bit…? - which SP/Build…?)
  • Other security related software installed…?
  • Which AV(s) did you use before Avast…?
5

Hi GSV3Miac,
most crashes which I found were related to datascan feature.
Can you try to disable it for a while ?

6

Hi GSV3Miac,
fix will be included in next Avast update.
Thank you ffor report !