Windows 10: cmd pops up at startup with "unable to open xmrig.json"

Whenever I start my Laptop It starts cmd that says :unable to open "C:\Users\username\AppData\Roaming\Dll\config.json". unable to open "C:\Users\username\.xmrig.json". unable to open "C:\Users\username\.config\xmrig.json".Now I came to know that 'xmrig' is some sort of miner malwareI tried using task manager and task scheduler to find and stop the 'xmrig' but I didnt find anythingI also tried looking inside the AppData\Roaming folder but didn't find anythingPlease help me.

:)

 

.JSON files unable to open

So .json files, as far as my knowledge goes, are used for scripts, and once I decided to get such a script, however when I started it, it didn't work. So I tried different ways to fix it (I now know the script was just faulty) and one of those ways was
to look at the code, and when I did this I opened it with Notepad, regular Notepad. However, once done this, I couldn't open another script which I got instead. Instead of running it, it just opened Notepad for me to edit it! I think that I pressed/it was
automatically checked to always use Notepad to open .json files, so I thought it was a default app. So I went into settings, and erased all defaults, in hopes that it would work again now. However, to my dismay, it did not work! It just opens a pop-up windows
which asks me which app I want to use to open it, and I have no clue! I have no idea how to fix this, please help.

Thanks for reading, even bigger thanks for any answer, it's appreciated!

 

JSON FILES

Hi Acemere

The steps above create a dummy exe file, which you point windows to open json files with, then you delete the dummy exe and restart, When you restart the dummy exe will not exist, so Windows will not know how to open json files and that file association will
revert to unknown and the icon should be the default white icon . ..

 

JSON FILES

Hey, so I accidentally made my .json files to always open it with notepad. Now, I don't know how to restore it in its original state. Anyone can help?

Also, I want the .json file to be a white blank icon again and with the command "open with..." to pop up.