If you are running Avast and GOG Galaxy client (a gaming alternative to Steam, also includes free games), you may have troubles installing or playing games. Simply because Avast is really suspicious about any new software which is not being used massively. That of course doesn’t mean GOG Galaxy app is a malware.

You can download GOG Galaxy client from the official website www.gog.com. It is free for download for both Windows (7+) and Mac OS X.

How to Fix ‘Disk Access Problem’ in GOG Galaxy

First problem you may be having is to actually install any game from the client. Slightly after you begin the installation and download process, it fails with the message ‘Installation failed: disk access problem‘. There is no Avast warning displayed, but Avast is the reason why you can’t install the game. To fix this issue you have two options.

avast-vs-gog-galaxy-disk-accesss-problem

Solution #1 – Add GOG Galaxy Client to Avast Exclusion List

  1. Open Avast and go to ‘Settings‘ » ‘General‘ (first item)
  2. Find a tab called ‘Exclusions‘ and add the file path to GOG Galaxy client (‘C:\Program Files (x86)\GalaxyClient\*‘ by default)
  3. Confirm by clicking OK and restart (turn off and on) the GOG Galaxy application if running. Also you need to restart all Avast shields by going to Avast in the Windows system tray » right-click » ‘Avast shields control‘ » ‘Disable for 10 minutes‘ and the re-enable. Or you can just simply restart your computer
  4. Now you can install any game without issues. You can also reinstall the failed ones by going to ‘MORE‘ » ‘MANAGE…‘ » ‘VERIFY / REPAIR

add-gog-galaxy-to-avast-exclusion-list

For more details about working with the Avast exceptions checkout our full article ‘How to Add File/Website Exception into Avast Antivirus 2015 for Free‘.

Solution #2 – Disable/Pause Avast During the Game Installation

  1. Find the Avast icon in the Windows system tray (click on the top arrow to reveal it)
  2. Go to ‘Avast shields control‘ » ‘Disable for 10 minutes‘ (or more, depends on the game size)
  3. Confirm by clicking OK and restart (turn off and on) the GOG Galaxy application if running
  4. Now you can install any game without issues. You can also reinstall the failed ones by going to ‘MORE‘ » ‘MANAGE…‘ » ‘VERIFY / REPAIR

how-to-disable-pause-avast

For more details about pausing/disabling Avast checkout our full article ‘How to Turn Off (Disable) Avast Antivirus 2015 Completely or Partially‘.

How to Fix ‘Infection blocked’ Pop-up Blocking GalaxyClient.exe

Second problem usually occurs when there is a new version of GOG galaxy which is not being used widely. It may looks suspicious to Avast detection and therefore sometimes Avast evaluates it as a threat and block it. To fix this issue you can try following.

Solution #1 – Update Avast Program and Virus Definitions

  1. Open Avast and go to ‘Settings‘ » ‘Update‘ (third item)
  2. Click on the ‘Update’ button for both virus definition and program

Alternative steps:

  1. Find the Avast icon in the Windows system tray (click on the top arrow to reveal it)
  2. Go to ‘Update‘ » ‘Engine and virus definitions‘ then ‘Program

Now you should be running latest Avast version with the fresh virus definitions so it may not detect GOG Galaxy as virus.

how-to-update-avast-program-virus-definitions

For more details about updating Avast checkout our full article ‘How to Update Your Avast Antivirus 2015 for Free‘.

Solution #2 – Add GOG Galaxy Client to Avast Exclusion List

See the first solution above for fixing the ‘Disk Access Problem’ in GOG Galaxy.

Solution #3 – Disable/Pause Avast During the Game Installation

See the second solution above for fixing the ‘Disk Access Problem’ in GOG Galaxy.

Additional Notes

Although we have used Avast Free Antivirus 2018 screenshots in this article, these steps are also applicable for all Avast Antivirus solutions (i.e. also for Avast Pro Antivirus, Avast Internet Security, or Avast Premier) running the latest version available.

Steps are relevant for all Windows versions – Windows XP, Windows Vista, Windows 7, Windows 8, Windows 8.1 and Windows 10 (including Anniversary Update).

Written by Paul B.

My name is Paul and I love Avast since the Home Edition v4.8 (2008). I am recommending it to all my friends, but I realized they don't know how to use it. So I started this site in order to help others getting maximum from this awesome antivirus. Feel free to contact me via Facebook, comments below or this form.

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