Here’s how to fix launcher not opening in 6 steps

Aleksandar Ognjanovic
by Aleksandar Ognjanovic
Troubleshooting Expert
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  • Blizzard's launcher is the central hub for all Blizzard games but users have reported issues with the client not opening on Windows 10 machines.
  • If launcher is not opening on your PC, you won’t be able to play any of Blizzard’s games. This can be a major problem, but fortunately, there’s a way to fix this problem once and for all.
  • We are constantly covering news and we will provide fixes for the most common problems as they arise. To see them, head over to our dedicated page and don't forget to bookmark the page!
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battle net launcher not opening

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

However, even the top-notch game launcher/desktop client runs into problems occasionally. Some users reported that 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. So, if launcher won’t open after several tries, don’t worry — you’re at the right place. The enlisted solutions can be found below.

If Blizzard app won’t open, fix it with these solutions

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

1. Run launcher as admin launcher properties

  1.  Navigate to C:\Program Files (or Program Files x86)\
  2. Right-click on the Launcher.exe and open Properties.
  3. Choose the Compatibility tab.
  4. Check the ”Run this program as an administrator” box and confirm changes.compatibility not opening

Sometimes launcher isn’t opening because you lack administrative privileges. This is a relatively common problem with many applications, but fortunately, it can be easily solved as we’ve seen above.

Additionally, since the stuck mostly occurs while updating the client, we advise you to check your connection settings. Here are some steps you can take to troubleshoot the connection issues:

  • Flush DNS.
    1. Press Windows key + R to summon the Run elevated command line.
    2. In the command line, type ipconfig /flushdns, and press Enter.ipconfig /flushdns launcher not opening
  • Use a wired connection.
  • Restart your router or modem.
  • Reset router and/or modem to factory settings.
  • Run Windows Internet Connection Troubleshooter.internet connections troubleshooter launcher problems


Without the proper administrative permissions, launcher won’t work as intended or won’t even start. So, what you’ll need to do is to grant it the administrative permission and make sure that it can connect freely to dedicated servers.

After performing all the steps from above, the issue should be resolved. In case the problem is still there, it means that your network connection is working properly, and you can move to the next solution.

Is client crashing at startup? We have a fix for that also.

2. Clear launcher’s cache and delete Tools folder

Just like any other application, the launcher stores a lot of secondary data responsible for its seamless processing and configuration.

Now, every given file can get corrupted or incomplete and thus the related program will fail. Sometimes you can repair those files, but, more times than not, you’ll need to delete them and let the application rebuild them from a scratch.

That’s just what you’ll need to do with the launcher in order to address this issue.

Now, follow these steps to delete Cache and Tools folder in Program Data:

  1. Right-click on the Taskbar and open Task Manager.
  2. Kill these processes:
    • Game process
    • Agent.exe or Blizzard Update Agent.exe
    • Blizzard
  3. Close Task Manager and press Windows key + R to open the Run command line.
  4. In the command line, type C:\ProgramData and press Enter.
  5. Find folder and delete folder blizzard app stuck initializing
  6. Start again and look for changes.

3. Check the antivirus and firewall

We already stressed the fact that the launcher tends to fail to start if there’s no connection. But, most of the time the problem isn’t connection-related.

Sometimes the third-party antivirus or firewall are preventing the launcher to reach the dedicated servers and update.

This isn’t exactly a rare occurrence so it’s well advised to either disable the antivirus or to create an exception (exclude the folder). Either way, we don’t recommend to completely remove the antivirus due to obvious security risks.

Furthermore, there’s also a Windows Firewall as a possible reason for’s inability to start. If you’re not sure how to allow the launcher to communicate through Windows Firewall, follow the steps below:

  1. Type firewall in the Windows Search bar, and open Windows firewall launcher problems
  2. Click on the Allow an app or feature through Windows Firewall in the left pane.allow and app through windows firewall launcher not opening
  3. Choose to Change settings.change settings launcher not opening
  4. Click on the Allow another app button.allow another app launcher not opening
  5. Click on Browse and navigate to C:\Program Files (or Program Files x86)\ application not opening
  6. Add Launcher.exe and confirm changes.

After that, launcher halt should be resolved. If that’s not the case, then, by all means, check the last two steps. launcher links break your browser: what to do

4. Disable background programs

Some background programs might prevent the launcher to start. There’s a large variety of applications that can affect this desktop client, and it’s often stressed out by Blizzard support to try and disable them before everything else. Now, even though you’re aware of this, it can take a lot of time to individually disable programs and look for improvements.

So, the best way to find out is some other third-party program preventing the launcher is to try the selective startup mode.

Here’s how to do it:

  1. In the Windows Search bar, type msconfig.msc and open System Configuration.system configuration not launching
  2. Select the Selective startup.
  3. Uncheck the Load startup items box.selective startup not openining
  4. Now, navigate to the Services tab.
  5. Check the Hide all Microsoft services box.
  6. Click on the Disable all and then OK to confirm changes.disable all not opening
  7. Finally, restart your PC and start the Blizzard again.

With this, you’ll at least be in the clear in regard to the negative impact of third-party programs. If the client starts — good, if not — move to additional steps.

5. Enable the Secondary Logon service

  1. Type services in the Search bar and open launcher not opening
  2. Navigate to the Secondary Logon service, right-click on it, and open Properties.
  3. Change the Startup type to Automatic.
  4. Start the service and confirm changes.service properties not opening
  5. Restart your PC in order to apply changes.

Another rarely used service and another possible solution to your problem. Namely, Secondary Logon service is there to avoid multiple logon-logoff actions, so you can basically run a certain program with administrative permissions from the non-administrator account. And, for some peculiar reason, the launcher heavily depends on this service so you’ll need to enable it.

6. Reinstall the launcher

Finally, if all of the previous solutions were futile, the reinstallation is our last resort. A lot of users plagued by this problem tried to resolve it by reinstalling the desktop application right away. However, even though you remove the installation files from the Program Files folder, there are still files residing in the Program Data folder.

So, basically, everything stayed the same once the app is reinstalled. Therefore, in order to completely uninstall the desktop app and resolve the problem, follow these instructions:

  1. In the Search bar, type control and open Control Panel.
  2. Choose Category view and open Uninstall a program.
  3. Uninstall a desktop client from your PC.
  4. Now, press Windows key + R to open the Run dialog box.
  5. Type C:\ProgramData in the command line and press Enter.
  6. Delete the folder.
  7. Restart your PC.
  8. Download the installer and follow the wizard to install it.

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, the only thing we can suggest is to reinstall the system. The whole procedure is explained in this article so make sure to check it out.

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

FAQ: issues and questions

  • How do I reinstall battle net launcher?

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

  • Why is not downloading?

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.

Editor’s Note: This post was originally published in March 2019 and has been since revamped and updated in March 2020 for freshness, accuracy, and comprehensiveness.

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