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Outage in Webex by Cisco

Webex Dedicated Instance: Users may experience phone registration failures

Resolved Minor
August 21, 2026 - Started 10 days ago - Lasted about 5 hours

Incident Report

Summary AI Generated

Webex Dedicated Instance experienced phone registration failures lasting approximately 5.4 hours, initially affecting users in the US region before expanding to EMEA, APAC, and ANZ regions. Engineering investigated the issue and confirmed services were restored and stable after their review.

Engineering is investigating an issue where some users may experience phone registration failures in the US region. We will provide the next update in one hour or sooner if new information becomes available. We appreciate your patience while we address this issue and apologize for any inconvenience this may cause.

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Latest Updates ( sorted recent to last )
MONITORING 10 days ago - at 08/21/2026 07:46PM

After further review engineering determined services are now healthy and stable.

We are currently performing health checks and at this time and will continue to monitor the services to ensure continuity.

INVESTIGATING 10 days ago - at 08/21/2026 06:49PM

Engineering continues to actively investigate the issue where some users may experience phone registration failures in the US region. During the ongoing investigation, Engineering has identified that the issue is also impacting users in the EMEA, APAC, and ANZ regions. We will provide the next update in four hours or sooner if new information becomes available.

We appreciate your patience while we address this issue and apologize for any inconvenience this may cause.

INVESTIGATING 10 days ago - at 08/21/2026 05:45PM

Engineering continues to investigate an issue where some users may experience phone registration failures in the US region. We will provide the next update in one hour or sooner if new information becomes available.

We appreciate your patience while we address this issue and apologize for any inconvenience this may cause.

INVESTIGATING 10 days ago - at 08/21/2026 04:58PM

Engineering is investigating an issue where some users may experience phone registration failures in the US region. We will provide the next update in one hour or sooner if new information becomes available.

We appreciate your patience while we address this issue and apologize for any inconvenience this may cause.

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