FIX: launcher not opening on Windows 10 & 11

by Aleksandar Ognjanovic
Aleksandar Ognjanovic
Aleksandar Ognjanovic
Troubleshooting Expert
Aleksandar's main passion is technology. With a solid writing background, he is determined to bring the bleeding edge to the common user. With a keen eye, he always... read more
Affiliate Disclosure
  • If the launcher is not opening, it's possible that your cache or installation is corrupted.
  • Check your firewall settings and make sure that the app is allowed to access the Internet.
  • Third-party applications and services can cause this problem, so try disabling them temporarily.

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Blizzard’s client is a sturdy and reliable piece of software. It’s been there for ages and it’s the best indicator of a remarkable approach Blizzard takes when it comes to game distribution.

However, even this top-notch game launcher/desktop client runs into problems occasionally. Some users reported that the launcher won’t even start or crashes unexpectedly while initializing.

Since there’s a variety of possible culprits for this occurrence, we made sure to cover all of them, in this quick and informative guide.

So, if the launcher won’t open after several tries, don’t worry – you’re at the right place. The enlisted solutions can be found below.

How does work? is Blizzard’s digital distribution platform, and it was first released in 1996. The service allows users to chat and play together, but it also allows them to buy games online. main window (Source: Blizzard)

The application went through massive changes over the years, and now it’s a crucial component of all games developed by Blizzard.

Why won’t open on my PC?

The most common cause is file corruption, and if that’s the case, you might have to clear your cache or reinstall the software.

It’s also possible that other applications are interfering with or blocking it from accessing the Internet, so be sure to check that as well.

What do I do if Blizzard app won’t open on Windows 10 & 11?

  1. Run launcher as admin
  2. Check your network connection
  3. Clear launcher’s cache
  4. Check the antivirus and firewall
  5. Disable background programs
  6. Enable the Secondary Logon service
  7. Reinstall the launcher

1. Run launcher as admin

  1. Navigate to: C:\Program Files (x86)\
  2. Right-click on the Launcher.exe and open Properties.
  3. Choose the Compatibility tab. Check the Run this program as an administrator and click Apply and OK to save changes.
  4. Now start the application again and check if the problem is still there.

2. Check your network connection

  1. Press Windows key + R.
  2. Enter ipconfig /flushdns and press Enter.
  3. Press Windows key + I and navigate to Update & Security section.
  4. In the left pane, select Troubleshoot. In the right pane click on Additional troubleshooters.
  5. Select Internet Connections and click on Run the troubleshooter.
  6. Wait for the process to finish.

2. Clear launcher’s cache and delete Tools folder

  1. Right-click on the Taskbar and select Task Manager.
  2. Locate and end the following processes:
    • Game process
    • Agent.exe or Blizzard Update Agent.exe
    • Blizzard
  3. Close Task Manager.
  4. Press Windows key + R to and run the following command: C:\ProgramData

  5. Find folder and delete it.
  6. Start again and look for changes.

By performing these steps, you should be able to fix this problem and stop from crashing on startup.

3. Check the antivirus and firewall

  1. Type firewall in the Windows Search bar, and open Windows Defender Firewall.
  2. Click on the Allow an app or feature through Windows Firewall in the left pane.
  3. Choose to Change settings.
  4. Click on the Allow another app button.
  5. Click on Browse and navigate to: C:\Program Files (x86)\
  6. Add Launcher.exe and confirm the changes.

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4. Disable background programs

  1. Press Windows key + R and enter msconfig.
  2. Select the Selective startup. Uncheck the Load startup items box.
  3. Now, navigate to the Services tab. Check the Hide all Microsoft services box. Now click on the Disable all and then OK to confirm changes.
  4. Finally, restart your PC and check if the problem is resolved.

If the issue is resolved, you need to enable services one by one, until you manage to find the cause of the problem.

5. Enable the Secondary Logon service

  1. Type services in the Search bar and open Services.
  2. Navigate to the Secondary Logon service, and double-click it.
  3. Change the Startup type to Automatic. Now click Start to initiate the service.
  4. Restart your PC in order to apply changes.

6. Reinstall the launcher

  1. Press Windows key + X and choose Apps and Features.
  2. Select and click on Uninstall.
  3. Follow the instructions on the screen to remove the app.
  4. Now, press Windows key + R and run the following code: C:\ProgramData
  5. Delete the folder.
  6. Restart your PC and download the latest version of

To completely remove or any other software from your PC, we suggest using uninstaller software that will automatically remove all of the associated files and registry entries.

What to do if Blizzard app won’t open on Windows 11?

Reinstall and remove all of its files

  1. Press Windows key + I to open the Settings app.
  2. Navigate to Apps and select Installed apps.
  3. Locate on the list, click three dots next to it and choose Uninstall.
  4. Follow the instructions on the screen to remove the app.
  5. Delete directory from the following location: C:\Program Files (x86)
  6. Press Windows key + R and enter %appdata%.
  7. Delete and Blizzard directories if available.
  8. Repeat the steps 6 and 7 for the following values:
    • %TEMP%
  9. After removing all instances of, download and install the latest version.

What are some common errors?

There are all sorts of errors that can occur and interfere with this service, but the most common is error code 2.

Many users have also reported an unexpected error in, but it can be easily fixed.

Is free? is free to download and use, however, many games require a license or a monthly subscription in order to access them.

However, there are several games available that you can play completely free of charge. That should resolve your issues and you should be able to run the launcher and its respective games without trouble.

In case you’re still stuck with the problem, we advise you to check our guide on crashes for more useful solutions.

If you have questions regarding the launcher or alternative solutions, feel free to tell us in the comments section below.

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Frequently Asked Questions

  • In order to reinstall the launcher, you will need to follow the steps outlined above and you’ll have reinstalled in minutes.

  • Several errors can prevent you from downloading files from the internet. If the installer is one of them, then our guide will help you fix the problem in no time.

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