I am using version 26.12.4 and when I enable the new Critical update - "Require TLS 1.1 or higher for HTTPS connections" (that will be required later this year), Welkin is unable to connect to Salesforce any longer.
When I try to do a Pull from Salesforce, I get the attached error message and after clicking OK, Welkin hangs and finally crashes.
Disabling the critical update allows Welkin to work again, but since update wll be auto deployed, a fix will be needed...
Marc