·Summary
Monthly cumulative patches from Microsoft will be applied to all Windows Server instances in the production environment. Servers will be rebooted in rolling waves to minimize service disruption.
Scope
- 34 Windows Server 2019/2022 instances (web, application, and file servers)
- Domain controllers excluded — patched in a separate window
Schedule
| Wave | Servers | Window |
|---|---|---|
| Wave 1 | Dev/QA servers | 10:00 PM – 11:00 PM |
| Wave 2 | Application servers | 11:00 PM – 12:30 AM |
| Wave 3 | File/print servers | 12:30 AM – 2:00 AM |
Impact
- Brief service interruption (< 5 min) per server during reboot
- No expected downtime for end users if connections fall over to redundant nodes
Outcome
All 34 servers patched and rebooted successfully. No rollbacks required.
