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Superseded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 · March 2027

Mon 1 Mar

Tue 2 Mar

Wed 3 Mar

Thu 4 Mar

Fri 5 Mar

Sat 6 Mar

Sun 7 Mar

Mon 8 Mar

Tue 9 Mar

Patch Tuesday

Wed 10 Mar

Thu 11 Mar

Fri 12 Mar

Sat 13 Mar

Sun 14 Mar

Mon 15 Mar

Tue 16 Mar

Wed 17 Mar

Thu 18 Mar

Fri 19 Mar

Sat 20 Mar

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Tue 23 Mar

Wed 24 Mar

Thu 25 Mar

Fri 26 Mar

Sat 27 Mar

Sun 28 Mar

Mon 29 Mar

Tue 30 Mar

Wed 31 Mar

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