No impact incident

Cloud Security: Cisco Umbrella - Roaming Client connectivity issues following certificate migration - Global

Affected: SWG

Current status of Cloud Security: Operational — live Cloud Security status

Timeline

1. Oct 10, 2026, 23:47 UTC
   resolved
   On October 10, some Cisco Umbrella customers using roaming clients may have experienced connection instability or an inability to access the Internet. The issue affected environments where domains required to validate the new certificates were blocked by customer network or Umbrella policies, preventing certificate validation from completing successfully. Affected customers could temporarily restore connectivity by allowing the required certificate-validation domains through their policies. The certificate migration was rolled back at 20:47 UTC, restoring normal service. This incident has been resolved. Thank you for your patience. If you continue to experience issues, please contact Cisco Support.

Updates as published by Cloud Security (original).