Microsoft Pauses Optional Office Update After It Breaks Older Licenses

Overview

• The out-of-band update KB5002907, issued in late September, was intended to repair Microsoft 365 apps that had not received updates for more than 90 days so they could return to supported build updates.
• Microsoft halted distribution after Sept. 27 reports showed the update produced activation errors and, in some cases, removed Office installations entirely on affected machines.
• The problems have been concentrated on one-time‑purchase Office editions, notably Office 2016 and Office 2019, and on PCs using the Current Channel or Monthly Enterprise Channel.
• Microsoft’s support guidance tells users to try manual product reactivation or a full reinstall and to contact Microsoft support when those steps fail, noting that some repair attempts left devices without working Office apps.
• If users decline the optional update they risk staying on older, unpatched Office builds that no longer receive security fixes; some users and IT providers are exploring paid third‑party patches or migrating to alternatives such as LibreOffice.