I got "Server Connection Error" while installing Overwolf, what can cause this?

  • An anti-virus/firewall that might block the communication with the Overwolf servers.
    Make sure to white-list Overwolf.
  • Corrupted machine.config file. Please follow these steps to repair it:
    1. Go to C:\Windows\Microsoft.NET\Framework\v2.0.50727\config\machine.config
    2. Override "machine.config" with "machine.config.default" (delete the "machine.config" file, duplicate the "machine.config.default" file and rename it to "machine.config")

      *Note - You may need to repeat the process for the C:\Windows\Microsoft.NET\Framework64 folder as well. 
  • Overwolf server malfunction or downtime.
    Please try again after a while, just to make sure it's not a temporary issue.
  • Weak/Unstable Wi-Fi connection that disconnects every now and then.
    Connect your internet via cable or make sure your Wi-Fi connection is stable.
  • The connection is blocked by your ISP (internet service provider).
    Reach out to your ISP to find out how to remove the block.

Installer not starting / finishing properly

Overwolf is based on .NET Framework, and at times, the installed .NET component in your system may malfunction and prevent the Overwolf installer from running properly.

First, please make sure that the basic .NET Framework 3.5 feature is installed and enabled:

  1. Open the system's Control Panel
  2. Select "Programs" or "Programs and Features" (depending on the view setting):

  3. Select "Turn Windows features on or off":

  4. Make sure that the checkbox for ".NET Framework 3.5 (includes .NET 2.0 and 3.0)" is ticked. If there is an additional .NET Framework version in the list, as seen in the screenshot below, make sure that it is ticked as well:

    5. Restart your system (if asked to) and try to launch the Overwolf installer again.

If the .NET Framework 3.5 feature is already enabled, you may going to need reinstall the higher .NET Framework version (4.5-4.8) installed on your system. For more information, please visit this article.

Clean reinstall Overwolf client

If all of the above does not work, and you are still unable to install Overwolf, then let's try doing a full clean sweep of all Overwolf files, then try to re-install it.


To uninstall Overwolf just go to: Start -> Control Panel -> Uninstall a Program and uninstall Overwolf.

Once you finish uninstalling, head to C:\Program Files (x86) and check if you have an Overwolf folder (you shouldn't). Delete it, and proceed to do the following:

Windows 10

  1. Press the Windows key + R
  2. Type: %localappdata%
  3. Press enter
  4. Look for a folder named 'Overwolf'
  5. Delete it

Windows 7/8

  1. Click the Windows “Start” button
  2. In the search bar, type: %localappdata%
  3. Press enter
  4. Find the 'Overwolf' folder
  5. Delete it

Once you finish, please re-download (choose your favorite app) and launch Overwolf.

Overwolf Setup Installer

If the above-mentioned solutions did not help you overcome the issue, please try to run the setup installer . 
Once the installation is finished, you will need to do the following:

  1. Use the Windows search (press the Windows key + R) 
  2. Enter C:\Program Files (x86)\Overwolf and press enter. 
  3. Right click on the OverwolfLauncher.exe file and create a shortcut to put on your desktop. 
  4. Start Overwolf, sign up/log in and download any app(s) you like from the Appstore, then enable the overlay for the games as you wish.

*Please note that the setup process can install Overwolf on your C drive only.