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There is the solution if you cant open Edge again (it wont start no matter what you have done -repair/modify/reinstall etc)
- Go to (C:\Users@USERNAME@\AppData\Local\Microsoft\Edge\User Data)
- Find a file named Local State - you can remove or rename it
- Start Edge as normal
- If you get stuck at blank setup popup window, kill Edge with Taskmanager and start it again.
- Should work as normal now.