Microsoft 365 Apps for Enterprise end of life: end of support by version
Microsoft · Admin Tools
For Microsoft 365 Apps for Enterprise by Microsoft, patchletter knows 3 support cycles. 3 of them have already ended and receive no more security updates. The cycles come from the open endoflife.date project, last reconciled on 04/09/2026.
When does support end for which Microsoft 365 Apps for Enterprise version?
A cycle is a maintained version line. Where a date is given, support ends on that day — after it the vendor ships no more security updates for that line.
| Cycle | Latest version | End of support | Status |
|---|---|---|---|
| Semi-Annual Enterprise ChannelLTS | – | 53 days ago | End of Life |
| Semi-Annual Enterprise Channel (Preview) | – | 361 days ago | End of Life |
| Semi-Annual Enterprise Channel (Extended) | – | 179 days ago | End of Life |
Which Microsoft 365 Apps for Enterprise versions no longer receive security updates?
3 of 3 cycles have ended. If you run one of those lines, the vendor ships you no more patches — not even for critical flaws.
- Microsoft 365 Apps for Enterprise Semi-Annual Enterprise Channel
- Microsoft 365 Apps for Enterprise Semi-Annual Enterprise Channel (Preview)
- Microsoft 365 Apps for Enterprise Semi-Annual Enterprise Channel (Extended)
Where does the EOL data for Microsoft 365 Apps for Enterprise come from?
From the open endoflife.date project, which collects vendors' official support commitments. patchletter reconciles the cycles daily; the Microsoft 365 Apps for Enterprise data is as of 04/09/2026. In case of doubt the vendor's own lifecycle page applies — patchletter deliberately stores no vendor full texts.
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