Fix Nexus Mod Manager not opening on Windows 10

Games have become a lucrative industry and are growing at a fast pace. Mods are the result of this madness and the desire of gamers to update and customize their favorite games. Mods can make a game completely new and introduce new themes, characters, designs, etc. Mods allow users to test their creativity and make improvements to any game if they see something missing from it. Nexus Mod Manager is a program that manages such mods. It can download and install mods for various games including Skyrim and Fallout. This open source program is generally bug-free, however, some users have reported that their Nexus Mod Manager won't open even after several tries. This can be a frustrating issue as it prevents users from loading mods into their games. If you are also facing Nexus Mod Manager not opening issue, you have come to the right place. We bring you the perfect guide to help you fix Nexus Mod Manager not opening on Windows 10.

How to fix Nexus Mod Manager not opening on Windows 10

This section provides a list of reasons why your Nexus Mod Manager won't open.

  • Nexus Mod Manager (NMM) is corrupted
  • Nexus Mod Manager does not have admin rights
  • Intervention of the antivirus program
  • Damaged mods
  • Nexus Mod Manager is incompatible

Method 1: Basic Troubleshooting Methods

The first approach to fix Nexus Mod Manager not opening Windows 10 issue is to perform some basic troubleshooting methods on your PC.

1. Restart your computer

Restarting your computer can fix many system-related errors and other minor issues. This is often the first thing recommended when experiencing any PC-related issues. This may solve the problem at hand. Follow our guide on how to restart or reset your Windows PC to restart your computer.

2. Check mods

Make sure you are using mods that are compatible with the game. If your mods are outdated or incompatible with the game, NMM may not start. Check the version of the mods and their compatibility with the site you downloaded them from.

3. Update HMM

If you are using an outdated version of Nexus Mod Manager that you may be experiencing, Nexus Mod Manager will not open the issue. Make sure NMM is updated to the latest version and for that you can follow our How to Update Nexus Mod Manager guide.

4. Rebuild the .NET Framework

Some users have reported that the Nexus Mod Manager opening issue can be fixed by updating the .NET Framework. Check which version of .NET Framework you are using, if it is out of date, download the latest version of .NET Framework and install it. This may fix the issue.

5. Restart Windows

If you have an outdated version of Windows installed on your Windows 10 PC, you might be experiencing this issue. Microsoft releases regular updates for Windows to fix bugs and other problems. You can check and update Windows by following our guide to download and install the latest Windows 10 update.

Method 2: Run Nexus Mod Manager as Administrator

In some cases, you may encounter Nexus Mod Manager not opening issue if it does not have the proper permission to access system files. You can fix this issue by opening NMM as an administrator. To do this, follow these steps.

1. Go to the Nexus Mod Manager folder.

2. Right-click the NMM application and select the Properties option. The NMM properties window opens.

3. Click the Compatibility tab.

4. In the "Settings" section, check the "Run this program as an administrator" box.

5. Click the Apply button and then the OK button to save your changes.

Method 3: Change Nexus Mod Manager Folder Location

It has been reported that shifting the Nexus Mod Manager folder from its default location can fix the issue. This simple trick has worked for many users and you can do it by following these steps.

1. Simultaneously press the Windows + E keys to open File Explorer.

2. Go to C:Program Files and find the Nexus Mod Manager folder.

3. Right-click it and select the Copy option. Now paste this folder in any preferred location.

4. Follow step 2.

5. Right-click the Nexus Mod Manager folder and select the Delete option.

Method 4: Clear Black Tree Game Folder

NMM user data may be corrupted causing Nexus Mod Manager to not open. You can reset the user configuration by clearing the contents of the Black Tree game folder and resetting the NMM. This might fix the issue, and in order to do so, follow these steps.

1. Press Windows + E keys together to open File Explorer.

2. Now click "View" in the top left corner.

3. In the Show/Hide section, select the Hidden items check box.

4. Navigate to this path, here X will be replaced by your username.


5. In the Black_Tree_Gaming folder, press Ctrl + A to select all files, and then right-click>Delete.

Check if you can open NMM and if the issue is resolved.

Method 5: Temporarily disable your antivirus (if any)

If you are using any antivirus program, then in some cases it may detect NMM as malicious and malicious. This can interfere with NMM and cause issues like Nexus Mod Manager not opening Windows 10. You can check and fix this problem by temporarily disabling your antivirus. Follow our guide on how to temporarily disable your antivirus in Windows 10.

Note. If this method does not work, turn on your antivirus program immediately to protect against viruses and malware.

Method 6: Disable Windows Defender Firewall (Not Recommended)

Windows Defender Firewall can block certain applications and cause them to crash. It may be blocking the Nexus Mod Manager, which is why it won't open. You can test this by temporarily disabling your firewall. This may fix the issue. You can do this by following our guide on how to turn off the Windows 10 firewall.

Method 7: Reinstall Nexus Mod Manager

Sometimes Nexus Mod Manager can get corrupted due to some sort of glitch or other similar problem. This may cause the Nexus Mod Manager to not open. In this case, you reinstall NMM and fix the problem. Follow our guide to reinstall Nexus Mod Manager.

1. Press the Windows key, type "Control Panel" and click "Open".

2. Set View by > Category, then click Uninstall a Program under Programs.

3. Right-click Nexus Mod Manager in the application list and select the Uninstall option.

4. Follow the on-screen uninstall wizard and click Yes to completely uninstall Nexus Mod Manager from Windows.

5. Simultaneously press the Windows Key + E to open File Explorer and navigate to the Local Disk (C:) > Program Files folder.

6. Right-click the Nexus Mod Manager folder in the location and select the Delete option from the list.

7. Finally, restart your PC from the START menu.

8. Now press the Windows key, type chrome and click open.

9. Go to the official GitHub site for Nexus Mod Manager.

10. Click the NMM-0.83.6.exe file in the Assets section to install the latest Nexus Mod Manager.

11. Follow the instructions on the setup wizard screen to install NMM on your PC.

Method 8: Perform a System Restore

If none of the methods work for you, then this is the last resort. A system restore will revert your settings to a version where you didn't encounter the Nexus Mod Manager not opening problem. This will solve the problem. Follow our guide on how to create a system restore point in Windows 10.


We hope this guide was helpful and that you were able to fix the issue that caused the Nexus Mod Manager to not open. Let us know which method worked best for you. If you have any questions or suggestions feel free to leave them in the comments section.

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