Smartsheet outage, 25 August 2026
Intermittent Cell Link and Cross Sheet Reference delays/failures
- Started
- Resolved
- 26 Aug 2026, 00:23 UTC (after 3 h 37 min)
- Impact
- Minor
- Affected
- Sheets
Last update from Smartsheet
Between August 24 and August 28, 2026, a performance optimization caused certain formulas and cross-sheet references to evaluate incorrectly or produce errors following row insertions or deletions. The root cause was an asynchronous calculation change that performed partial data loads, omitting dependent cells and silently persisting inaccurate formula values. The issue was mitigated on August 27 at 11:25 AM PDT by disabling the optimization flags, with full data restoration completed on August 28 after recalculating approximately all affected known sheets. Preventive measures include enforcing dependency coverage safeguards and adding automated test suites for structural sheet edits. Anoth...
Read the full incident on the official Smartsheet status page
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