5 Ways to Fix HDOS Not Showing on Jagex Launcher

If HDOS is not showing in Jagex Launcher on your computer, it could be due to various reasons, including outdated drivers, missing launcher or client files, corrupted cache, compatibility issues, or firewall interference.

To begin with, ensure you have installed the correct version of HDOS on your computer and that it meets the system requirements. Next, check the display settings to ensure the game runs on full screen and that no Windows updates are pending.

How can I fix the HDOS not showing on Jagex Launcher?

1. Using the Task Manager

1. Press the Windows key, type jagex launcher, and click Open.
2. Press Ctrl + Alt + Delete to open the Task Manager app.
3. Go to the Processes tab, select Jagex Launcher, and click End task.
4. Now, reopen Jagex Launcher, and you will see HDOS.

You must have HDOS installed on your device to ensure these steps work.

2. Clear the Launcher’s cache

1. Press Ctrl + Alt + Delete to open the Task Manager app.
2. Go to the Processes tab, select Jagex Launcher, and click End task to completely close the launcher.
3. Press Windows + E to open File Explorer.
4. Go to this path after replacing Your Username with the username you have: C:\Users[Your Username]\AppData\Local\Jagex Launcher
5. Open the Jagex file, press Ctrl + A to select all the content, and click the Delete icon from the menu bar.

Clearing the cache of the launcher can also help you fix the Jagex Launcher Connection Error; read this guide to learn more.

3. Disable the compatibility mode for the launcher

1. On the desktop, right-click the Jagex Launcher icon and select Properties.
2. Go to the Compatibility tab.
3. Under Compatibility mode, remove the checkmark Run this program in compatibility mode for.
4. Click Apply and OK to confirm the changes.

If this doesn’t fix the issue, reverse engineer these steps to enable the launcher’s compatibility mode. Running the launcher in compatibility mode can help prevent other problems like the Jagex Launcher Black Screen issue.

4. Disable the Windows Firewall temporarily

1. Press the Windows key, type control panel and click Open.
2. Select Category for View by and click System and Security.
3. Click Windows Defender Firewall.
4. Select the Turn Windows Defender Firewall on or off option from the left side.
5. Under Private network settings and Public network settings, select Turn off Windows Defender Firewall (not recommended) and click OK.

Now try using Launcher and the HDOS client; if it doesn’t come up, you need to add both to the Allowed Apps list of Firewall. Follow these steps to do the same:

1. Follow steps 1 to 3 to get to the Windows Defender Firewall page on the Control Panel app.
2. Select the Allow an app or feature through Windows Defender Firewall option from the left side.
3. Click Change settings.
4. Select Allow another app.
5. Click Browse and look for the Jagex Launcher.exe in this location and click Open: C:\Program Files (x86)\Jagex Launcher
6. Click Add.
7. Once you see it in the list, place a checkmark for Private and Public, then click OK to confirm.
8. To add HDOS to the list, follow Steps 1-7, but navigate to this path after replacing Your Username with your username, select HDOS.exe, and click Open: C:\Users\[Your Username]\AppData\Local\HDOS

5. Reinstall the HDOS and Jagex Launcher

1. Press Windows + I to open the Settings app.
2. Select Apps from the left pane, and click Installed apps.
3. Locate HDOS from the list, click the three-dot icon, and select Uninstall from the context menu.
4. Click Uninstall again to confirm. Follow the same steps to uninstall Jagex Launcher.
5. Next, to remove all the related files to both the launcher and client, navigate to these paths after replacing Your Username with your username:
   • HDOS - C:\Program Files or C:\Program Files (x86)
Jagex Launcher - C:\Users\[Your Username]\AppData\Local
6. Select and delete any residual files of the apps.
7. Go to the official website of HDOS, click Download, and select the version suitable for your machine. Once the file is downloaded, double-click it to initiate the installation, then follow the on-screen instructions to complete it.
8. Next, head to the Jagex Launcher website and click Download. Double-click the downloaded file and follow the on-screen instructions to complete the installation.
9. Both apps are installed; restart your computer to save the changes.
10. Once your PC restarts launch the Jagex Launcher, go to RuneScape Old School, locate the Game client, and select HDOS.

In conclusion, to fix the HDOS not showing on the Jagex Launcher, you can close the Jagex Launcher using Task Manager, then reopen it, disable the compatibility mode for the launcher, clear the cache, disable the firewall, or reinstall both HDOS and Jagex Launcher.

If you are wondering whether to use Jagex or Steam to play RuneScape on your machine, we have a detailed guide to help you decide. In case the Jagex launcher is not working, check out how to fix it.

If you have suggestions or questions about the HDOS not showing on Jagex Launcher, feel free to mention them in the comments section below.