Login and Sync Issues

Final update

# Incident Postmortem - Login and Sync Issues **Date of Incident:** 2026-04-27 **Time of Incident \(UTC\):** 14:15 - 15:41 **Service\(s\) Affected:** All web APIs **Impact Duration:** Approximately 86 minutes ## Summary On April 27, 2026, [1Password.com](http://1password.com/) experienced a period of elevated error and full service unavailability in our USA/Global region. A defect deployed in application scaling logic caused a cascading failure during peak usage. This resulted in a period of service unavailability for customers in the USA/Global region. This was not a security incident, and there was no loss of data. ## Impact on Customers * **Sign-in and account access:** Customers in the USA/Global region experienced errors or were unable to sign in or access their 1Password accounts between approximately 14:15 and 15:41 UTC on April 27, 2026. * **All 1Password clients:** The disruption applied to all client types, including the web app, CLI, browser extensions, and desktop and mobile applications, for customers connecting through the USA/Global region. * **Geographic regions affected:** Only customers on the USA/Global region were affected. Other regions were not impacted. ##

1. Postmortem · May 12, 15:38 UTC
   # Incident Postmortem - Login and Sync Issues **Date of Incident:** 2026-04-27 **Time of Incident \(UTC\):** 14:15 - 15:41 **Service\(s\) Affected:** All web APIs **Impact Duration:** Approximately 86 minutes ## Summary On April 27, 2026, [1Password.com](http://1password.com/) experienced a period of elevated error and full service unavailability in our USA/Global region. A defect deployed in application scaling logic caused a cascading failure during peak usage. This resulted in a period of service unavailability for customers in the USA/Global region. This was not a security incident, and there was no loss of data. ## Impact on Customers * **Sign-in and account access:** Customers in the USA/Global region experienced errors or were unable to sign in or access their 1Password accounts between approximately 14:15 and 15:41 UTC on April 27, 2026. * **All 1Password clients:** The disruption applied to all client types, including the web app, CLI, browser extensions, and desktop and mobile applications, for customers connecting through the USA/Global region. * **Geographic regions affected:** Only customers on the USA/Global region were affected. Other regions were not impacted. ## What Happened? We deployed a change to how our services signal their readiness to serve requests, which contained a latent defect. * **Timeline of events:** * **2026-04-27 14:15 UTC** - Load increase triggers issues. * **2026-04-27 14:29 UTC** - Incident declared; response team mobilized. * **20
2. Resolved · Apr 28, 18:00 UTC
   This incident has been resolved.
3. Monitoring · Apr 27, 17:09 UTC
   Traffic levels have returned to normal and service performance has stabilized. We are continuing to monitor to ensure full recovery.
4. Monitoring · Apr 27, 15:41 UTC
   Service has largely recovered, and we are continuing to monitor the situation closely. Some customers may still experience intermittent issues with login and syncing, including via CLI.
5. Identified · Apr 27, 15:22 UTC
   We are seeing signs of recovery for the issue causing errors and increased latency across our services. Some customers may still experience intermittent failures or delays when logging in and syncing, including via CLI. Our teams continue to monitor the situation closely.
6. Investigating · Apr 27, 15:08 UTC
   Our teams continue to investigate an issue causing errors and increased latency across our services. Customers may experience failures or delays when logging in and syncing, including via CLI. We are actively working to identify the root cause and will provide further updates as more information becomes available.
7. Investigating · Apr 27, 14:54 UTC
   We are currently investigating an issue causing errors and increased latency across our services. Customers may experience failures or delays when logging in and syncing, including via CLI.