Are you struggling to open Nexus Mod Manager on your PC? Do you want to know how to fix File Nexus Mod Manager won’t open problem? Read on the post till the end.
The Nexus Mod Manager is an open-source, free tool that enables its users to download, update, install, and manage mods for all of their favorite games so that they can have smooth gaming experience.
Now, if you are already familiar with it, you might be wondering why Nexus Mod Manager as it is no longer available? Well, the reason is simple – it is efficient, and even though it is discontinued, the majority of gamers are still using it.

There are gaming consoles that can be used to play games, but the majority of gamers prefer not to invest their money to buy a console as they can enjoy their favorite games on their PC. The latest gaming PCs offers everything that you can have in a console.
However, there are some problems that occur more often with PC gamers, and these issues must be solved in the best possible way to get a smooth gaming experience.
If you are also a PC gamer and use Nexus Mod Manager to update or install new games, chances are you might have faced the issue that says Nexus Mod Manager won’t launch more than once. It is so annoying, and don’t let you enjoy the game you want to update or download.
So, what are the ways to fix Nexus Mod won’t launch a problem?
Well, below, you will find a complete guide that will help you to fix the Nexus Mod Manager stuck loading issue.
How to Fix Nexus Mod Manager Won’t Open Issue?
Here are some best ways that you can try, and they will surely help you to fix File Nexus Mod Manager, not opening issue.
1- .Net Framework Version

The most common reason that can prevent File Nexus Mod Manager from opening is you are using an outdated .Net Framework version on your gaming PC.
If you’ve installed the .Net Framework on your PC, check its version and then search to see whether its latest version is available or not. If you found its latest version, remove the previous one from your PC and download and install the latest one.
This simple trick might help you to fix the Nexus Mod Manager stuck loading issue. However, even after installing the latest .Net Framework version, the issue still persists, you can try the below method.
2- Run Nexus Mod Manager with Administrator Privileges

Another simple solution to fix the Nexus Mod Manager not opening issue is to run it as Administrator on your PC. To do so, here are a few steps that you have to perform;
- Launch the Nexus Mod Manager folder on your PC.
- Right-click on the EXE file, and then click on Properties.
- Click on the Compatibility tab in the new window.
- Look for the option that reads Run this Program as Administrator and check the box to enable it.
- Click Apply and then OK.
Now, launch the File Nexus Manager to determine whether it is opening or not. If not, follow the below steps.
3- Remove user.config File from Black Tree Gaming Folder

Here is another way to try to fix the Nexus Mod Manager, not opening issue. You can try this by deleting one of its files contained in the Black Tree Gaming Folder. To do so, here are the steps;
- Firstly, launch the File Explorer from your PC.
- Open the C drive by double-clicking it.
- Double-click on Users folder to open it.
- Locate your name folder and open it.
- Double-click on the AppData folder.
- Now, open the Local folder.
- Find the folder that reads Black Tree Gaming and open it.
- Insider the folder, locate the folder that reads Nexus Client EXE.
- You will see a range of folders with different versions. From there, open the latest and most recent one.
- Inside the folder, find the file that reads user.config and delete it.
Go back and launch the File Nexus Mod Manager to see whether the problem is resolved.
4- Disable the Antivirus

Another common reason that often prevents the Nexus Mod Manager from opening is your Antivirus. You can disable your Antivirus to try to fix the Nexus Mod Manager not opening issue. To do so, here are the steps;
- Right-click on the Antivirus icon located in the system tray icon.
- Hover over the Antivirus and then click on the Disable option.
When you are done doing that, try to launch the Nexus Mod Manager. Hopefully, the Nexus Mod Manager not opening problem should be solved now.
Final Thoughts
Nexus File Manager is one of the most used tools that let you download the latest game titles, install them, update, and manage your game mods. However, it is also a fact that sometimes it failed to launch, which is so annoying. To fix Nexus Mod Manager not opening issue, above are some simple tricks that you can try to fix it. These tricks will help you to remove the issue permanently so that you can enjoy a smooth gaming experience on your PC. For queries, leave us a comment below.
FAQs
Q: Can I still use Nexus Mod Manager on my PC?
Ans: NMM is no longer supported by Nexus Mods. However, it is still in use, and the majority of games use it to download and update the latest gaming titles. Moreover, if you want to download it, you can get its latest version from GitHub.
Q: What is the alternative of the Nexus Mod Manager that I can use?
Ans: Since the Nexus Mod Manager is discontinued, you can use Vortex as its alternative. It offers some unique features and has a modern interface.