Office 2019 End of Life: 352 Flaws Listed Since Oct 14, 2025, and Only Volume Copies Got Fixes

Office 2019 end of life was October 14, 2025 for Windows (Microsoft ended Office 2019 for Mac on October 10, 2023). As of November 12, 2026, 394 days later, Microsoft’s own security data lists 352 vulnerabilities affecting Office 2019 disclosed since then. Volume-licensed copies received 13 monthly fix builds; retail copies received none.

Office 2019 end of life date: October 14, 2025, with an asterisk for Mac

Microsoft’s lifecycle page for Office 2019 lists a start date of Sep 24, 2018, mainstream end of Oct 10, 2023 and extended end of Oct 14, 2025, under the Fixed Lifecycle Policy. The page stores that last date as 06:59 UTC on October 15, which is why some trackers print October 15. It applies to every Windows edition Microsoft lists: Home and Business, Home and Student, Personal, Professional, Professional Academic, Professional Plus and Standard. Microsoft’s lifecycle site has no “Office LTSC 2019” page (the first LTSC-branded Office listed is Office LTSC 2021); Microsoft calls the 2019 business edition “volume licensed versions of Office 2019”.

The Mac version is a separate product with no extended phase. Office 2019 for Mac ended on Oct 10, 2023, 1,129 days before this report. Office 2016 ended the same day as Office 2019 on Windows, so the “office 2016 and 2019 end of life” date is one date: October 14, 2025.

Days from release to final end date on each Microsoft lifecycle page. Blue is mainstream support, navy is extended. Office LTSC 2021 and 2024 have mainstream only.

Is Office 2019 still getting security updates?

It depends on how it was bought, and almost no page on this query says so. Microsoft’s update history and security release notes both carry the same clause: “at Microsoft’s sole discretion, we may choose to issue one or more updates to Office 2019 after October 14, 2025.” Microsoft used it every month. Volume-licensed Office 2019 (the Version 1808 channel used by editions such as Professional Plus 2019) received 13 Patch Tuesday builds from Nov 11, 2025 to Nov 10, 2026, plus an out-of-band build on Jan 26, 2026 and two September re-releases, 16 in all.

Retail copies got nothing. The last retail Office 2016 and 2019 build, Version 2508 (Build 19127.20302), is dated Oct 14, 2025, and no security note since lists a retail Office 2019 line. Office 2016 MSI installs sit in between: Microsoft’s MSI update page lists monthly updates from November 2025 (KB5071102) to September 2026 (KB5127194) and none for October.

Office notes: Microsoft’s “Release notes for Microsoft Office security updates”, which list every CVE fixed in a release across all channels. MSRC data: Microsoft’s CVRF API, one document per month; “Office desktop” counts CVEs whose affected products include Office, Microsoft 365 Apps or a standalone Office app (servers, web and mobile excluded). The Jan 26, 2026 out-of-band build (10417.20095) is not a Patch Tuesday row.

Two things stand out. The volume of Office fixes has jumped: 12 Office desktop CVEs in November 2025, 175 in November 2026, part of the Microsoft-wide surge in our Patch Tuesday statistics for 2026. And from October 2026 Microsoft’s machine-readable data stopped naming Office 2019 or Office 2016 as affected products, even though the October 13 and November 10 notes still list volume Office 2019 builds. For the 344 Office CVEs in those two months, Microsoft’s data no longer says whether Office 2019 is affected.

A smaller discrepancy: the update history gives the October 13, 2026 volume build as 10417.20207, the same number as September 8, while the security notes give 10417.20228. Check File, Account against the security notes.

What still works after end of life, and what stops

The Microsoft 365 line matters for businesses that kept Office 2019 desktop apps on Exchange Online mail. Microsoft’s connectivity table ended support for Office 2016 and 2019 connections on October 10, 2023, two years before end of support, and now lists only Microsoft 365 Apps, Office LTSC 2024 (to October 9, 2029) and Office LTSC 2021 (to October 13, 2026). Microsoft says older versions “might still be able to connect” but are not tested against service changes.

The KB5002907 incident

On Windows the risk is not only missing patches. Microsoft’s KB5002907, an optional Windows Update package meant to repair stuck Microsoft 365 Apps installs, now opens with a warning that it produced “unexpected results on some devices running Office 2016 or Office 2019”: some copies showed as unlicensed, and “in rare cases, the product may have been removed.” Microsoft paused the rollout (the page is dated September 26, 2026) and tells affected owners to reactivate or reinstall from their account.

Office 2019 for Mac: read-only since July 13, 2026

Mac owners lost more than updates. Microsoft’s certificate notice says the certificate Office uses to validate licensing “expires on July 13, 2026”, and apps below version 16.83 drop into reduced functionality mode: open, view and print, no edit or save. The Office 2019 for Mac end-of-support page says 16.78 is “the last build that supports Office 2019 license types”, and Microsoft’s Mac update article states the consequence plainly:

“Because Office 2019 cannot be updated to the required version, this issue cannot be resolved by updating or reinstalling Office 2019 for Mac.”

The page now carries a “Published: May 15th, 2026” date. The Internet Archive’s October 11, 2023 copy said “all your Office 2019 apps will continue to function” and that they “won’t disappear from your Mac”. The live text keeps only “won’t lose any data”, adding that data “can be accessed on any supported Microsoft 365 or Office product.” TidBITS reported the change on June 1, 2026; we compared the archived and live pages ourselves. The Windows page still says the apps “may continue to function”.

Security exposure since end of support, by source

Three public datasets answer “how exposed is Office 2019 now”, and they disagree in useful ways. Microsoft’s own data (MSRC) lists 352 CVEs affecting Office 2019 disclosed from November 2025 through September 2026, 2.9 times the 122 in the 12 months before end of support. The NVD matches only 64 of them to its Office 2019 product entry (CPE), the last published Aug 20, 2026; 57 of those 64 carry a High severity score. Every NVD match is also in Microsoft’s list, so the gap is NVD’s product tagging lagging, not fewer flaws. Anyone filtering NVD by product will see a fraction of the real count.

The third source is the one that matters most for priority. CISA’s catalog, version 2026.11.10, has 43 Microsoft Office entries, 5 added after Oct 14, 2025. Two are 2009 flaws that NVD maps only to Office 2007 and older. Of the three new ones, Microsoft lists Office 2019 as affected only for CVE-2026-21509. Our CISA KEV analysis for 2026 covers the catalog as a whole.

For a retail Office 2019 user that table reads simply: an exploited Office flaw that Microsoft lists for Office 2019, patched for volume customers on Jan 26, 2026, the day CISA added it to the catalog, with no patch for retail owners.

Office end of life dates: every perpetual version

Microsoft’s lifecycle site lists 17 one-time-purchase Office suites for Windows and Mac, from Office XP to Office 2024; Office 2000 and Office 97 have no product page. Every Windows suite before 2019 had five years of mainstream and five of extended support. Office 2019 got two years of extended support, and the LTSC editions since get no extended phase at all. Office 2021 and Office LTSC 2021 reached end of support on October 13, 2026, part of the year’s cluster in our Microsoft end of support 2026 calendar.

Dates as displayed on each Microsoft lifecycle page (Pacific time). Modern policy products (Office 2021, Office 2024) have a single retirement date. Office LTSC 2021 for Mac lists the same date for mainstream and extended end.

Which Office version am I on, and what do I do?

Pick your edition. The answer uses the dates, builds and Microsoft US list prices on this page, as of Nov 12, 2026.

Upgrade options and prices from Microsoft’s own store

Microsoft’s upgrade page is blunt: owners of a one-time purchase “need to buy the latest version”. There is no upgrade discount. Prices below are from Microsoft’s US product pages, retrieved Nov 12, 2026.

List prices, US, before tax. One-time purchases are supported to Oct 9, 2029, 1,062 days (34.9 months) after Nov 12, 2026. Subscription prices can change; our Microsoft 365 price increase tracker logs every change since 2011.

Spread over its remaining support, Office Home & Business 2024 costs $7.16 a month, about half of Business Standard’s $14.00, but it ends in 2029 and it is a retail product, the same buying route that left Office 2019 retail owners without a single post-deadline patch. Microsoft 365 Apps for business at $10.00 a month is the closest like-for-like for an office that already pays for email elsewhere.

What this means for MSPs

• Split the inventory by channel, not by version. In your RMM, Office 2019 at Version 1808 (Build 10417.x) is volume and has been patched through Nov 10, 2026; Office 2019 at Build 19127.20302 is retail and has had nothing since Oct 14, 2025. Treat the second group as the urgent one.
• Do not let “patched” become “supported”. Volume builds arrive under a discretion clause, and Microsoft’s own data stopped listing Office 2019 in October 2026. Report those seats to clients as unsupported with a dated replacement plan.
• Check Mac fleets for 16.78 and below. Since July 13, 2026 any Mac below 16.83 is read-only, and Office 2019 for Mac cannot get there. Users on Macs that cannot run macOS 12 need new hardware or the web apps.
• Hold KB5002907 on perpetual Office machines. Microsoft paused it after it deactivated or removed Office 2016 and 2019 on some PCs. Keep product keys and volume activation details in your documentation before any repair or upgrade.
• Flag Exchange Online clients on Office 2019 Outlook. That connection has been unsupported since October 10, 2023; it is the first thing a service change will break.
• Price the move per seat. 25 seats on Business Standard list at $4,200.00 a year; 25 copies of Office Home & Business 2024 list at $6,249.75 once and run to Oct 9, 2029.

Frequently asked questions

What is the Office 2019 end of life date?

Office 2019 for Windows reached end of support on October 14, 2025, after mainstream support ended October 10, 2023. Office 2019 for Mac had no extended phase and ended October 10, 2023. Microsoft’s lifecycle page stores the Windows date as 06:59 UTC on October 15, so some tools show October 15.

Will Office 2019 still work after October 2025?

On Windows, yes: Microsoft says the apps may continue to function, though without fixes for retail copies. On a Mac, no longer fully: since July 13, 2026 Office 2019 for Mac can open and print files but cannot edit or save them, and Microsoft says updating or reinstalling cannot fix that.

Is Office 2019 still getting security updates?

Only volume-licensed copies such as Professional Plus 2019. Microsoft shipped 16 builds for them between Nov 11, 2025 and Nov 10, 2026, at its discretion. Retail copies (Home & Student, Home & Business, Professional) have had no build since October 14, 2025, while Microsoft’s data lists 352 newly disclosed vulnerabilities affecting Office 2019.

Can I upgrade my Office 2019 to Office 2024?

Not as a discounted upgrade. Microsoft says one-time purchase owners need to buy the latest version: Office Home 2024 lists at $179.99 and Office Home & Business 2024 at $249.99 in Microsoft’s US store, each for one PC or Mac, supported until October 9, 2029.

Do I need to uninstall Office 2019 before installing Office 2024?

On a Mac, Microsoft says you remove only the Office 2019 license with its License Removal Tool, not the apps, then sign in with the account tied to the new purchase. On Windows, a September 2026 Microsoft 365 Apps repair update (KB5002907) left some Office 2016 and 2019 PCs unlicensed or without Office, so take an image or note your product key before changing editions.

Can I still download Office 2019?

Owners can. Microsoft’s reinstall page for Office 2021, 2019 and 2016 still directs buyers to the Microsoft account dashboard to download what they purchased. For retail copies, a reinstall brings back the final October 2025 build, not new fixes.

Free to cite and republish with a link. The CSV holds the lifecycle of all 17 Office perpetual suites and the 13 post-end-of-support Patch Tuesday rows with build numbers and CVE counts.

References

1. Microsoft Lifecycle, Microsoft Office 2019, and the other 16 Office lifecycle product pages linked in the table. Accessed November 2026.
2. Microsoft Lifecycle, Microsoft Office 2019 for Mac. Accessed November 2026.
3. Microsoft, Fixed Lifecycle Policy. Accessed November 2026.
4. Microsoft Support, End of support for Office 2016 and Office 2019. Accessed November 2026.
5. Microsoft Support, End of support for Office 2019 for Mac, and Internet Archive copy of October 11, 2023. Accessed November 2026.
6. Microsoft Learn, Certificate update for Microsoft 365 apps on managed macOS and iOS devices. Accessed November 2026.
7. Microsoft Support, Update Microsoft 365 or Office on your macOS or iOS device. Accessed November 2026.
8. Microsoft Learn, Update history for Office 2016 C2R and Office 2019. Accessed November 2026.
9. Microsoft Learn, Release notes for Microsoft Office security updates. Accessed November 2026.
10. Microsoft Learn, Latest updates for versions of Office that use Windows Installer (MSI). Accessed November 2026.
11. Microsoft Security Response Center, CVRF API v3.0. Accessed November 2026.
12. NIST National Vulnerability Database, CVE API 2.0. Accessed November 2026.
13. CISA, Known Exploited Vulnerabilities Catalog. Accessed November 2026.
14. Microsoft Support, KB5002907: Optional update for out-of-date Microsoft 365 Apps installations. Accessed November 2026.
15. Microsoft Learn, Office versions and connectivity to Microsoft 365 services. Accessed November 2026.
16. Microsoft Learn, Office and Windows configuration support matrix. Accessed November 2026.
17. Microsoft Learn, Plan an upgrade from older versions of Office to Microsoft 365 Apps. Accessed November 2026.
18. Microsoft Support, End of support for Office 2021. Accessed November 2026.
19. Microsoft Support, How do I upgrade Office?, and Download and install or reinstall Office 2021, Office 2019, or Office 2016. Accessed November 2026.
20. Microsoft Learn, Overview of Office LTSC 2024. Accessed November 2026.
21. Microsoft US store and plan pages: Office Home 2024, Office Home & Business 2024, Microsoft 365 Personal, Microsoft 365 Family, Business Basic, Apps for business, Business Standard, plans and pricing. Accessed November 2026.
22. TidBITS, Office 2019 for Mac Goes Read-Only on 13 July 2026 (June 1, 2026). Accessed November 2026.