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.

← Dec 2025 Feb 2026 →

Superseded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 · February 2027

Mon 1 Feb

Tue 2 Feb

Wed 3 Feb

Thu 4 Feb

Fri 5 Feb

Sat 6 Feb

Sun 7 Feb

Mon 8 Feb

Tue 9 Feb

Patch Tuesday

Wed 10 Feb

Thu 11 Feb

Fri 12 Feb

Sat 13 Feb

Sun 14 Feb

Mon 15 Feb

Tue 16 Feb

Wed 17 Feb

Thu 18 Feb

Fri 19 Feb

Sat 20 Feb

Sun 21 Feb

Mon 22 Feb

Tue 23 Feb

Wed 24 Feb

Thu 25 Feb

Fri 26 Feb

Sat 27 Feb

Sun 28 Feb

Patch Tuesday and security (B) releasesPreview (D) releasesOut-of-band releases.NET Framework servicing packagesEdge, Office, Teams, Defender and server releasesAll product versions