Tuesday 13 January 2026
January 2026: is it safe to deploy?
What Microsoft fixed, how urgent it is, and whether anything broke, per Windows version, from Microsoft's release tables, release health, MSRC, CISA, and what the community reports.
Superseded
Newer updates replace January 2026.
The CVEs it fixes are unknown; no open known issues found in the current public evidence; out-of-band fixes followed on 17 Jan, 24 Jan. See November 2026 Patch Tuesday.
MSRC's January 2026 security update document isn't collected.
ChangeIntel's reading of public signals, not advice; check Microsoft's guidance and test before you deploy. Terms
- Microsoft CVEs
- Unknown
- Exploited fixed
- Unknown
- In CISA KEV
- Unknown
- Open known issues
- 0
- Out-of-band
- 12
Release calendar · November 2025
Sat 1 Nov
Sun 2 Nov
Mon 3 Nov
Tue 4 Nov
Wed 5 Nov
Thu 6 Nov
Fri 7 Nov
Sat 8 Nov
Sun 9 Nov
Mon 10 Nov
Tue 11 Nov
Wed 12 Nov
Thu 13 Nov
Fri 14 Nov
Sat 15 Nov
Sun 16 Nov
Mon 17 Nov
Tue 18 Nov
Wed 19 Nov
Thu 20 Nov
Fri 21 Nov
Sat 22 Nov
Sun 23 Nov
Mon 24 Nov
Tue 25 Nov
Wed 26 Nov
Thu 27 Nov
Fri 28 Nov
Sat 29 Nov
Sun 30 Nov
Patch Tuesday and security (B) releasesPreview (D) releasesOut-of-band releases.NET Framework servicing packagesEdge, Office, Teams, Defender and server releasesAll product versions