SSMS 18 closes immediately
I had to uninstall/reinstall version 18 and it still won't (stay) open. About 20 seconds after I open it, it immediately closes; not even getting to the login window.
David Shiflet commented
it's likely %userprofile%\appdata\roaming\Microsoft\SQL Server Management Studio\18.0\UserSettings.xml is corrupted. Try renaming it for now to get unblocked.
If you want to try to fix this particular issue, open the xml file and look for XML snippets with a hierarchy like "Item/ServerConnectionItem/Connections". Each <ServerConnection> tag should have a child <Instance> tag. Maybe one of those tags got deleted somehow, perhaps from some prior SSMS bug that caused the file to be written out incorrectly.
Does anyone have an update on this?