Calendar · By month
What’s shutting down in October 2026
9 things are scheduled to be taken away in October 2026. Closest first — each links to the vendor’s own announcement.
API →13 days
Microsoft Microsoft begins blocking Exchange Web Services (EWS) requests from non-Microsoft apps to Exchange Online; developers must migrate to Microsoft Graph
Other →13 days
Microsoft Microsoft Publisher is being discontinued. Microsoft 365 subscribers will not be able to access Publisher after 1 October 2026, and it will no longer be included in Microsoft 365 or available to install or download. The perpetual (one-time-purchase) version reaches end of support on 13 October 2026 with Office LTSC 2021 and consumer Office 2021. Microsoft's recommendation is to convert existing Publisher (.pub) files to PDF or Word before the cutoff.
API →14 days
Google Google has deprecated its Gemini 2.5 models in the Gemini API and directs developers to Gemini 3.x replacements; as of the latest deprecations page only Gemini 2.5 Flash Image carries a shutdown date (2 October 2026), while 2.5 Pro, 2.5 Flash and 2.5 Flash-Lite are listed as deprecated with "No shutdown date announced"
Feature →14 days
GitHub GitHub deprecates four selectable Copilot models — Gemini 3.5 Flash, Gemini 3.6 Flash, Kimi K2.7 Code, and Claude Opus 4.7 — across all Copilot experiences on 2 October 2026, directing users to newer replacements
API →17 days
Cloudflare Two related Cloudflare Zero Trust / Tunnel API changes reach end-of-life on 5 October 2026: the CIDR-encoded route endpoints (/accounts/{account_id}/teamnet/routes/network/{ip_network_encoded}) are removed in favor of the route_id-based /teamnet/routes endpoints, and the connections array is removed from cfd_tunnel and warp_connector list/get responses
OS →25 days
Microsoft Windows 11 24H2 stops receiving updates on Home, Pro, Pro Education and Pro for Workstations
API →27 days
Cloudflare The old /workers/namespaces/ REST API paths for managing Workers KV stop working; calls must move to the /storage/kv/namespaces/ paths
SaaS →34 days
Minimus Minimus, the hardened minimal container image provider, is ending operations: its registry (reg.mini.dev) is turned off on 22 October 2026 after a 60-day maintenance period, and no further updated images will be published
API →35 days