142.0.3580.0 keeps crashing

Me and a co-worker are having the same issues. Edge Dev will not launch, but does not appear to be generating an application crash event in the event logs. I set the target version override to still be able to use it.

I have same problem with 142.0.3581.0. loads and then disappears as quickly as it came.
did safe mode, disabled all non MS services, stopped all startup apps. reboot. nothing. 
repair nothing. 

I did a repair, and it wont even open new inprivate windows. 

How do i fix this issue.

Stable is working as it should. That's at least good.

Same issue on 142.3582 Canary verison. Wont even open, is there any solution to downgrade.

i Have tried 

PS C:\Windows\System32> $FullVersionToUse = "142.0.3582.0"
PS C:\Windows\System32> $content = @"
>> powershell.exe -WindowStyle hidden -Command "`$UserSID = [System.Security.Principal.WindowsIdentity]::GetCurrent().user.value;`$UserName = (Get-LocalUser | where-object -FilterScript {`$_.SID -eq `$UserSID}).name;Get-Process | where-object -FilterScript {`$_.path -eq \`"C:\Users\`$UserName\AppData\Local\Microsoft\Edge SxS\Application\msedge.exe\`"} | ForEach-Object -Process {Stop-Process -Id `$_.id -Force -ErrorAction SilentlyContinue};& \`"C:\Users\`$UserName\AppData\Local\Microsoft\Edge SxS\Application\msedge.exe\`" $Arguments"
>> "@
PS C:\Windows\System32> $content | Out-File -FilePath "C:\Users\$env:USERNAME\Downloads\EDGECAN Launcher $FullVersionToUse.bat"

Out-File: Could not find a part of the path 'C:\Users\Simon\Downloads\EDGECAN Launcher 142.0.3582.0.bat'.
PS C:\Windows\System32> $content | Out-File -FilePath "C:\Users\Simon\Downloads\EDGECAN Launcher $FullVersionToUse.bat"

But the last line (output) defeats me to downgrade.