Outage in KnowBe4
Prevent and Protect - Web Add-in Send Issues (EU Only)
Resolved MajorIncident Report
Summary AI Generated
**KnowBe4 – Prevent & Protect Web Add-in Send Issues (EU Only)** For approximately 5 hours, EU users of the KnowBe4 Email Security Add-in were unable to send emails, receiving the error "The add-in KnowBe4 email security is preventing this message from being sent." KnowBe4 investigated and deployed a fix, after which the service was monitored before being confirmed resolved.
We have received reports that the KnowBe4 Email Security Add-in is showing the error "The add-in KnowBe4 email security is preventing this message from being sent" when sending emails. We are investigating this issue and will update this page when we have more information.
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Latest Updates ( sorted recent to last )
RESOLVED
12 days ago - at 10/13/2026 01:41PM
This incident has been resolved.
MONITORING
12 days ago - at 10/13/2026 11:07AM
We’ve implemented a fix for the Web Add-in sending errors and we’re monitoring the results to make sure no further issues occur.
INVESTIGATING
12 days ago - at 10/13/2026 08:47AM
We have received reports that the KnowBe4 Email Security Add-in is showing the error "The add-in KnowBe4 email security is preventing this message from being sent" when sending emails. We are investigating this issue and will update this page when we have more information.
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