So it seems, Synapse 2 just cannot open in Windows 11. I've tried everything, reinstalling, changing DPI & compatibility settings. I can't get it to open the window and even login. It shows up in the task bar overflow and refuses to open. It's the only app i'm having trouble with so far, in Windows 11

To reiterate: I'm using Razer Synapse 2 for my legacy devices, Razer Anansi Keyboard and Naga 2014 mouse. After upgrading to Windows 11, I can't even get Synapse 2's window to open up and login. I've tried reinstalling and many compatibility modes. Am I shit out of luck?

UPDATE:

was about to reply to some of you with angry comments for spreading misinfo because i contacted Razer and they assured me they're not updating legacy software for Windows 11.

Then i tried it again, and again, and finally, i figured it out. This definitely didn't work on the early versions of Windows 11 but it appears to have changed. I reinstalled Synapse 2 legacy as someone in the comments did, but that wasn't enough. I'm on the latest version of W11.

I tinkered around and changed the High DPI scaling override-
located in the Compatibility Tab of RzSynapse.exe Properties.
Make sure the Override Box is checked,
click the dropdown menu and switch to "Application."
Mine was initially set to System Enhanced.

Yours may have worked without a flaw because it was already set to Application for DPI Override.

This was my initial theory to get it working again when first installing Windows 11 but no change of DPI worked then nor any compatibility setting. Things have finally changed!

Hope this helps anyone else struggling