You can reset the Krita configuration in one of the following ways: Press and hold Shift + Alt + Ctrl while starting Krita. This should show a pop-up asking if you want to reset the configuration. Press yes to reset it.

Why is Krita not working?

Restart your computer or delete any Krita in Task Manager in case it is running somewhere, then go to the folder you extracted the zip to, and double-click on the “krita” shortcut inside. If it works, great, because that means the issue is fixed now. If it still doesn’t work, you can try Krita 4.1.

How do I fix Krita?

To fix your Krita lagging or slow issue

1. Step 1: On your Krita, click Settings > Configure Krita.
2. Step 2: Select Display, then select Direct3D 11 via ANGLE for Preferred Renderer, select Bilinear Filtering for Scaling Mode, and uncheck Use texture buffer.