Some common problems on Minecraft java edition are caused by adware.
Adware causes a number of problems with minecraft, from corrupting saves to crashing the game on load. Thankfully using a program like AdwCleaner by Malwarebytes is quick and easy, and after a restart your PC will be adware free.
Requirements
- AdwCleaner by Malwarebytes
- Download from Malwarebytes
Tutorial
- Open the downloaded file

- There’s no install, AdwCleaner will just run from the .exe
- Click ‘Scan Now’

- The scan will now run and the progress is displayed.

- When the scan is complete, a list of infections will be displayed.
- Make sure all the checkboxes are ticked, and then click ‘Next’

- On the next screen, tick all the boxes and then click ‘Quarantine’
- The selected items will be quarantined and AdwCleaner will ask to restart your PC.
- Click ‘Restart Now’
When your PC starts back up it will be adware free.
If you have any trouble with this tutorial please make a post on r/Minecrafthelp, where one of us will be happy to guide you through it.
Happy crafting folks!