Author Topic: Avast and ShareX software  (Read 1587 times)

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Offline Murdock09

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Avast and ShareX software
« on: October 23, 2020, 11:31:59 PM »
Does anyone know how I can make ShareX work while running Avast antivirus? It is my favorite software to use to easily take screenshots, especially in GIF format. Now it has worked fine for years until I got an update from Avast back in May 2020, which made recording a GIF image only store a static image (like a normal screenshot but in gif format) and not an animated one.
My guess here is that Avast is either protecting the folder it is writing the GIF data in or blocking the process that encodes the recorded video to GIF format (I believe ShareX uses a process called ffmpeg.exe).

The moment I disable avast (by disabling all 11 shields through the taskbar icon context menu) the recording of GIFs works again. It does not work if I disable all shields manually in the Avast interface (I tried to figure out if it was one shield in particular blocking it), I really have to disable Avast completely for it to work.

I have also tried adding both ShareX.exe and ffmpeg.exe to the Avast exceptions and the "allowed apps" list, the ShareX application and screenshots directory as an exception as well, and even changing the directory ShareX stores the images in to another directory on a different drive, but this did not work either.

Offline Asyn

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Re: Avast and ShareX software
« Reply #1 on: October 25, 2020, 08:32:07 PM »
- Which Avast..? (Free/Premium)
- Which version/build of Avast..?
- OS..? (32/64 Bit..? - which SP/Build..?)
- Other security related software installed..?
- Which AV(s) did you use before Avast..?
W8.1 [x64] - Avast PremSec 22.7.7366.BC [UI.713] - Firefox ESR 91.11 [NS/uBO/PB] - Thunderbird 91.11
Avast-Tools: Secure Browser 103.0 - Cleanup 22.2 - SecureLine 5.18 - DriverUpdater 22.2 - CCleaner 6.01
Avast Wissenswertes (Downloads, Anleitungen & Infos): https://forum.avast.com/index.php?topic=60523.0

Offline bob3160

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Re: Avast and ShareX software
« Reply #2 on: October 25, 2020, 09:05:05 PM »
ShareX is working on my windows 10 System without problems.
Free avast! Security Seminar: http://bit.ly/2N1eaR2  -  Important: http://www.organdonor.gov/ -- My Web Site: http://bob3160.strikingly.com/ - Win 11 Pro v21H2 64bit, 16 Gig Ram, 1TB SSD, Avast Free 22.5, How to Successfully Install Avast http://goo.gl/VLXdeRepair & Clean Install https://goo.gl/t7aJGq -- My Online Activity https://

Offline Murdock09

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Re: Avast and ShareX software
« Reply #3 on: October 25, 2020, 10:26:33 PM »
- Which Avast..? (Free/Premium)
- Which version/build of Avast..?
- OS..? (32/64 Bit..? - which SP/Build..?)
- Other security related software installed..?
- Which AV(s) did you use before Avast..?

- Which Avast..? Premium
- Which version/build of Avast..? Happening since update in may, now on 20.8.2432 (build 20.8.5684.602)
- OS..? Windows 10 Pro 64-bit
- Other security related software installed..? None
- Which AV(s) did you use before Avast..? None

ShareX is working on my windows 10 System without problems.

Including the option "Screen recording (GIF)"? Normal screenshots are working for me but not the GIF ones unless avast is disabled

Offline bob3160

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Re: Avast and ShareX software
« Reply #4 on: October 25, 2020, 10:59:07 PM »
- Which Avast..? (Free/Premium)
- Which version/build of Avast..?
- OS..? (32/64 Bit..? - which SP/Build..?)
- Other security related software installed..?
- Which AV(s) did you use before Avast..?

- Which Avast..? Premium
- Which version/build of Avast..? Happening since update in may, now on 20.8.2432 (build 20.8.5684.602)
- OS..? Windows 10 Pro 64-bit
- Other security related software installed..? None
- Which AV(s) did you use before Avast..? None

ShareX is working on my windows 10 System without problems.

Including the option "Screen recording (GIF)"? Normal screenshots are working for me but not the GIF ones unless avast is disabled
In order to create the 'gif, it needs to download something from the internet which was bblocked by Avast I needed to grant the download.
once that was done, the gif creation also worked.

The download needed and initially blocked by Avast was ffmpeg.exe
« Last Edit: October 25, 2020, 11:03:22 PM by bob3160 »
Free avast! Security Seminar: http://bit.ly/2N1eaR2  -  Important: http://www.organdonor.gov/ -- My Web Site: http://bob3160.strikingly.com/ - Win 11 Pro v21H2 64bit, 16 Gig Ram, 1TB SSD, Avast Free 22.5, How to Successfully Install Avast http://goo.gl/VLXdeRepair & Clean Install https://goo.gl/t7aJGq -- My Online Activity https://

Offline Murdock09

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Re: Avast and ShareX software
« Reply #5 on: October 26, 2020, 10:23:43 PM »


I pressed download and it did indeed download the ffmpeg.exe, nothing blocked by avast so far. Until I try to take the GIF screenshot, it freezes for a second and then fails to save it as an animated image. Unless I disable all the avast shields then it works without issues.

Both ShareX and ffmpeg are also added to the Allowed Apps list but no luck so far
« Last Edit: October 26, 2020, 10:26:19 PM by Murdock09 »

Offline bob3160

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Re: Avast and ShareX software
« Reply #6 on: October 27, 2020, 02:22:10 PM »
When all else fail, there's always a clean install of each application.
Totally remove and re-install each program and make sure you don't bypass any warnings
in Avast when they pop-up.
I also don't know if you have any other programs installed that might be the culprit.
It's working without problems on this computer running the latest version of Windows 10 and Avast Omni.
Free avast! Security Seminar: http://bit.ly/2N1eaR2  -  Important: http://www.organdonor.gov/ -- My Web Site: http://bob3160.strikingly.com/ - Win 11 Pro v21H2 64bit, 16 Gig Ram, 1TB SSD, Avast Free 22.5, How to Successfully Install Avast http://goo.gl/VLXdeRepair & Clean Install https://goo.gl/t7aJGq -- My Online Activity https://