Delete the Reolink folder in C:\Users\[YourUsername]\AppData\Roaming\reolink .
If the Web Interface continues to throw Error 126, the fastest workaround is to avoid the browser entirely. reolink javascript error 126
If you want, share where you see the error (Windows app, Chrome, Edge, which Reolink model/firmware). I can give a more targeted fix. reolink javascript error 126
