I have uninstalled and installed Anki multiple times. Although I restart my laptop and end task using task manager the problem arises every time.
might have to do with an add-on preventing anki to open (had this problem with pomo add-on) in this case follow the 2. Check Add-ons in When problems occur - Frequently Asked Questions
this problem happens to me when i open anki after starting windows (due to startup process from the system, anki and others apps are slow to open in the beginning )