Login error: ERR_CONNECTION_CLOSED
Login error definition and status.
Symptom
The Smartsheet login screen (https://app.smartsheet.com) shows this error message: ERR_CONNECTION_CLOSED
Cause
The issue could be related to proxy settings.
Resolution
Contact your IT team and have them add smartsheet.com to their bypass proxy list. They may wish to temporarily disable the use of the proxy or VPN service to see if this resolves the issue.