How do I combine Patch Tuesday with our production schedule without disrupting users?
Microsoft ships updates on the second Tuesday of the month. Pushing immediately is risky, waiting a month is also risky. The middle ground is a short test window and a fixed production window.
Try this first
- 1Build two rings: ring 1 = IT and a few volunteers, ring 2 = everyone else. Ring 1 gets patches the Wednesday or Thursday after Patch Tuesday.
- 2Test ring 1 for a week: business apps, RDS, line-of-business. On issues escalate to the vendor for a fix or workaround.
- 3Schedule ring 2 in a fixed maintenance window, for example the third Thursday/Friday evening. Servers in a fixed order: members first, DCs last and one at a time.
- 4Communicate to users at least a week ahead, with start and end times. Add a 30-minute buffer for unexpected reboots.
- 5Keep a rollback path: snapshots before patching on critical servers, or a previous image. Remove snapshots within 48 hours of success.
When to bring us in
For out-of-band emergency patches (an actively exploited zero-day) deviate from the schedule. Have a quick decision frame: severity, exposure, can we mitigate without patching.
See also
- One DC or two DCs for an SMB office?Two is almost always the right answer; one DC is a single point of failure for logon, DNS and GPOs.
- Should I split FSMO roles across two DCs?For a small domain all on one DC is fine; with two DCs splitting is tidier but not required.
- How do I know my AD replication is healthy?Replication errors creep in silently; they only surface when logins or GPOs misbehave.
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