Reason for the #M365 outage?
53% DNS
3% Local ISP
26% BGP
18% @inversecos' new training
2,129 votes • Final results

Jan 25, 2023 · 8:55 AM UTC

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Replying to @cyb3rops
10 times out of 10 it’s DNS 13 times out of 10 it’s an expired cert
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Replying to @cyb3rops
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It’s always DNS.
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GIF
Replying to @cyb3rops
Sorry, Florian. It was probably my fault. My cat video needed moar power. I didn't realize they were using that at the time.
GIF
Replying to @cyb3rops
DNS if not BGP.. calling it now.
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Replying to @cyb3rops
BGP first, if not then it is DNS misconfiguration.
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Replying to @cyb3rops
I vote for, someone didn't realize that person X, who was let go, did valuable maintenance that was frequent needed and now nobody is doing it.
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8
Replying to @cyb3rops
Specific hosting or regions down and problems failing over, redirection, or caching is my guess, if it's not BGP.
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Replying to @cyb3rops
Expired certificate
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Replying to @cyb3rops
@SwiftOnSecurity tried his hand at subnetting again
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