Microsoft's connectivity.office.com certificate expires, triggering browser security warnings
By
Connor Jones
Not artisan, but a perfectly fine bagel. Hits the spot.
Summary
Microsoft's connectivity.office.com domain, used by IT professionals worldwide to test network connectivity to Microsoft 365, began throwing untrusted certificate warnings after the SSL certificate expired on June 14. The lapse in certificate renewal caused browsers to flag the site as insecure, highlighting a basic security oversight by Microsoft that affected sysadmins relying on the tool for firewall and connectivity testing.
Key quotes
· 3 pulledMicrosoft appears to have dropped the ball with its certificate management after a domain used by sysadmins worldwide to test connectivity to Microsoft 365 started throwing untrusted connection warnings in browsers.
The connectivity.office.com domain is used by IT pros to test their network's connectivity to Microsoft 365 and ensure their firewalls aren't blocking anything that could affect an organization's access to Microsoft servers.
An SSL server report retrieved on Monday showed that the certificate expired on June 14 after last being r
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