Sigma Computing change history: Workbooks cannot be opened for all Azure-hosted orgs

Sigma Computing reported a critical outage preventing all Azure-hosted organizations from opening workbooks, starting approximately 19:50 UTC Sep 6, 2023 and resolved at 2023-09-07 21:44 UTC (computed duration: 24 h 47 min). Azure Key Vault inaccessibility disrupted encryption/decryption; Key Vault recovery restored workbook and data warehouse connection access. Sigma stated customer metadata remained secure.