How to Fix AppHangB1 Error on Steam

Many users on the forum have reported the vexing AppHangB1 error. According to reports, this error appears when they try to launch some applications (such as Microsoft Edge, Photoshop, Excel, and so on) and especially when they start any games through their Steam account. If you experience this problem, your computer will become unresponsive, slow, or even freeze, and the application or game will stop responding and be closed.

This problem will be described in the error reporting: This program was unable to interact with Windows due to a bug. Furthermore, you can learn more about the problem by reading the Problem signature and Extra information about the problem. The Problem Event Name is AppHangB1, and the affected application or game is displayed next to the Application Name. Some users attempted to relaunch the game or application and restart their computer without success. Furthermore, determining the source of the AppHangB1 error is difficult because the issue may differ between devices.

How to Fix AppHangB1 Error on Steam

How to Fix AppHangB1 Error on Steam

Whitelist Steam To Your Firewall

Starting with the most basic, adding Steam to your firewall’s whitelist has a good chance of resolving this issue. While your antivirus software primarily monitors software processes on your computer for malicious activity, your firewall monitors network connections.

Steam and its games rely on a variety of network-based features in order to function properly. In this case, your firewall may have prevented Steam from making online connections, resulting in this error. To proceed with this step, you’ll need an administrative account for your system. Here’s how to add Steam to your firewall whitelist:

  1. Begin by pressing the Windows key on your keyboard to bring up the Start menu.
  2. Search for ‘firewall’ and then select ‘Firewall & Network Protection’.
  3. Look for and click on Allow an app through firewall once you’ve been redirected to a new window.
  4. On your screen, a window containing all of the installed apps on your computer should appear. To access and change
  5. these settings, go to the top-right corner of your screen and select Change settings.
  6. Finally, look for Steam and Steam Web Helper and select both the Private and Public options.

This will add Steam to your firewall’s whitelist, which is a list of programs that your firewall does not fully restrict. This should grant Steam the necessary permissions to run and connect to any networks that may be required.

Disable Any Antivirus Programs

Similarly, third-party antivirus programs can monitor and prevent certain apps from freely accessing the internet. Your antivirus software, like the method described above, may prevent Steam from accessing or making connections. You can either disable your antivirus program or add Steam to the whitelist of your antivirus. Either option allows Steam to operate freely on your system, allowing it to access and create any necessary network connections. Unfortunately, third-party antivirus programs are all differently coded and interfaced. As a result, we will be unable to provide you with a comprehensive list of steps to assist you in disabling your antivirus.

Verify Integrity of Game Files

Moving on to more Steam-related methods, verifying the integrity of your game files is an excellent way to troubleshoot any issues specific to your game. This method is for you if you’ve ever installed a mod or simply have a corrupted file in one of your game’s folders.

The integrity of your game’s files will be verified by directly comparing your locally stored game to the online version on Steam’s servers. Any inconsistencies will be deleted and noted before being replaced with authentic files from Steam’s servers. If certain files are missing from your library, this will automatically download new files to your Steam account. Here’s how to test the integrity of Steam game files:

  1. To begin, launch the Steam app on your computer/laptop.
  2. Then, at the top of your screen, click on the Library tab.
  3. After being redirected to your game library, right-click the game in question and select Properties.
  4. Finally, go to Local Files and select the option Verify Integrity Of Game Files.

Repair Steam’s Library Folder

If the above method fails, we’ll have to try a method with a much broader scope. Steam’s library files are typically found in your C: drive, which houses the majority or all of your games. These library folders can occasionally become corrupted, compromised, or suffer from software issues that must be resolved. Fortunately, Steam provided an easy way to repair and resolve these issues. Here’s how to fix Steam’s library folders:

  1. Navigate to the top-left corner of your screen and click on Steam while the Steam app is already open.
  2. Go to the Downloads tab after clicking Settings.
  3. Select Steam Library Folders from the Content Libraries menu.
  4. You should now see a list of folders containing all of your Steam games. Right-click on the problematic game’s folder and select Repair Library Folder.

This will automatically fix and repair any problems with your folder, which should solve the problem if one was discovered. Hopefully, this has helped you resolve the AppHangB1 error on Steam.

Configure Steam’s Launch Options

Steam and its games can be launched in a variety of ways. You can, for example, run Steam in various DirectX versions, which can help, change, and even fix certain interface issues on your computer. DirectX is a set of interfaces that aid in the execution of tasks and programs, and it is an essential feature for Steam. Depending on your computer’s age, Steam may be using an older DirectX version or a manual one that is completely unnecessary. Here’s how to customize Steam’s launch options.

  1. You’ll need to open the Start menu and search for ‘Steam’ for this one.
  2. Then, right-click the Steam app and choose Open file location.
  3. You should be redirected to a new folder, with the Steam shortcut highlighted. The presence of an arrow in the bottom-left corner of the icon indicates that it is a shortcut.
  4. Select Properties from the context menu when you right-click the Steam shortcut.
  5. Add -dx9 or -dx11 to the Target text field. You can experiment with different DirectX versions, or you can try to remove any ‘-dx’ configurations that were made if one was already implemented.
  6. Finally, press the Apply and OK buttons to save your changes.

Exit Steam’s process from Task Manager and restart your Steam application to see if this resolves the issue. This step will require some trial and error to find the right launch configurations to run Steam smoothly.

Perform A Full System Scan.

If you’ve exhausted all of the above options, we’ll have to assume that this problem is caused by malware. A full system scan should remove any viruses that are corrupting your files. Depending on the speed of your computer and the size of your files, this step could take minutes or even hours.

Prepare to leave your computer alone for a few minutes to take a quick shower or watch YouTube videos. Unfortunately, we are unable to provide a list of steps for performing a full system scan for third-party antivirus programs at this time. You’ll have to look up and search for these steps on your own. However, here’s how to run a full system scan with Windows Defender:

  1. To begin, launch the Start menu by clicking on the Windows icon in the lower-left corner of your screen.
  2. Then, search for ‘Defender’ and launch Windows Security.
  3. From here, select Virus & threat protection and then Scan options.
  4. Finally, select Full scan and press the Scan now button to start the full system scan.

After applying all this above solution and still stuck in the same issue than we recommend you to go to their official steam support website and request your problem to be solved.

Final Words

Steam is an online video game distribution platform and app with social media features and community message boards. It was created by Valve, the same company that created Half-Life, Counter-Strike, and Left4Dead. It is one of the most popular gaming platforms and functions as both an online store and a community portal.

I hope you understand this article, How to Fix AppHangB1 Error on Steam.

James Hogan
James Hogan
James Hogan is a notable content writer recognized for his contributions to Bollyinside, where he excels in crafting informative comparison-based articles on topics like laptops, phones, and software. When he's not writing, James enjoys immersing himself in football matches and exploring the digital realm. His curiosity about the ever-evolving tech landscape drives his continuous quest for knowledge, ensuring his content remains fresh and relevant.

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