Cloudflare incident: Browser isolation session data sync issues

Affected components

• Browser Isolation

1. resolvedSep 24, 2026, 22:37 UTC

   This incident has been resolved.

2. monitoringSep 24, 2026, 17:28 UTC

   A fix has been implemented and we are monitoring the results.

3. identifiedSep 24, 2026, 17:26 UTC

   Cloudflare is investigating issues with Browser Isolation's session data sync. Customers that use Browser Isolation may observe errors on acquiring a browser stating that browser storage is unavailable, and they will need to sign into web apps again. They will continue to be able to use browsers during this time.

What APIStatus.watch saw

Our 5-minute checks didn't record a change in Cloudflare's overall status around this incident. Smaller or regional incidents often leave a provider's overall status green.

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How often does Cloudflare have incidents?

Cloudflare reported 38 incidents in the last 90 days, 1 of them major or critical. A typical incident lasted 1h 28m. See Cloudflare's uptime and incident history