Office Online Server Office Online Server · Version Status
Office Online Server Office Online Server End of Life Date
Office Online Server Office Online Server end-of-life date, support status, and CVE risk. Data from endoflife.date and official vendor documentation.
⚡
Office Online Server Office Online Server reaches end of life on December 31, 2026. Plan your migration now — 118 days remaining.
📅 Get reminded before Office Online Server Office Online Server reaches EOL on December 31, 2026 — alerts 90, 30 & 7 days out.
✓ Alerts are on — confirmation is in your inbox.
EOL Date
Dec 31, 2026
118 days remaining
Latest Release
—
Standard release
Release Date
May 4, 2016
Office Online Server Office Online Server series
Lifecycle detail
Office Online Server 2016 was released on May 4, 2016 and support is scheduled to end on December 31, 2026 — a planned supported lifespan of 10 years and 8 months.
Attack Surface
10/30 Medium tier
CISA KEV Exposure
0/20 Not in KEV
Extended Support
0/10 Available
EOL Risk Score™ — proprietary methodology by endoflife.ai. Factors: EOL recency, attack surface breadth, CISA KEV catalog presence, extended support availability. Updated at every build.
Methodology → ·
View score card →
Extended Support
Extended Office Online Server Office Online Server support is available
Commercial vendors offer security patches beyond EOL. Compare your options.
Compare Options →
All Office Online Server Versions
What does Office Online Server Office Online Server end of life mean?
When Office Online Server Office Online Server reaches end of life, the maintainers stop issuing security patches for this version. CVEs discovered after the EOL date are publicly disclosed on the National Vulnerability Database with no patch available. Exploit code frequently appears on GitHub within days of disclosure.
The CVE blind spot: Most vulnerability scanners check for known CVEs but do not flag the ongoing accumulation of unpatched vulnerabilities in EOL software versions. Running Office Online Server Office Online Server past its EOL date creates a permanently growing attack surface that standard security tooling will not surface.
Migrate to a supported version or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.
Frequently Asked Questions
When does Office Online Server Office Online Server reach end of life?
Office Online Server Office Online Server reached end of life on December 31, 2026. That is 118 days remaining.
Is Office Online Server Office Online Server still supported?
Office Online Server Office Online Server is still supported but approaching end of life on December 31, 2026. Begin planning your migration now.
What should I upgrade to from Office Online Server Office Online Server?
What are the security risks of running Office Online Server Office Online Server past EOL?
When Office Online Server Office Online Server reaches end of life, the maintainers stop issuing security patches. Any CVEs disclosed after the EOL date accumulate with no remediation path. Most vulnerability scanners do not flag this — it is the CVE blind spot. Organizations running EOL Office Online Server should migrate immediately or implement compensating controls.