Windows Server 2025 Datacenter Azure Edition overview
Hotpatch gives you the ability to apply security updates without restarting a device. This keeps virtual machines up to date and secure. By reducing the number of Patch Tuesday restarts, these devices are also more available. Hotpatch is enabled by default on Azure for Windows Server 2025 Datacenter Azure Edition. To learn more, see Hotpatch for virtual machines. You can manage and apply updates using Azure Update Manager, the Azure portal, or the Azure command-line interface. Some of the benefits include:
- Higher availability and fewer restarts
- Faster deployment of updates because the packages are smaller, install faster, and have easier patch orchestration using Azure Update Management
- Better protection because the hotpatch packages are scoped to Windows security updates and you do not have to restart
Hotpatch Calendar 2026
Check the calendar for hotpatch updates for Windows Server 2025. With hotpatching, devices receive a baseline cumulative update in the first month of each quarter.
January to April
Windows Server 2025 Hotpatch updates
| Month | Update Type | Type | KB article |
|---|---|---|---|
| January | 2026.01 B | Baseline (Restart) | KB5073379 |
| February | 2026.02 B | Hotpatch | KB5075942 |
| March | 2026.03 B | Hotpatch | KB5078736 |
| April | 2026.04 B | Baseline (Restart) | KB5082063 |
May to August
Windows Server 2025 Hotpatch updates
| Month | Update Type | Type | KB article |
|---|---|---|---|
| May | 2026.05 B | Hotpatch | KB5087423 |
| June | 2026.06 B | Baseline (Restart) | KB5094125 |
| July | 2026.07 B | Baseline (Restart) | |
| August | 2026.08 B | Hotpatch |
September to December
Windows Server 2025 Hotpatch updates
| Month | Update Type | Type | KB article |
|---|---|---|---|
| September | 2026.09 B | Hotpatch | |
| October | 2026.10 B | Baseline (Restart) | |
| November | 2026.11 B | Hotpatch | |
| December | 2026.12 B | Hotpatch |
Hotpatch Calendar 2025
View the update release calendar for hotpatch updates for Windows Server 2025.
January to April
Windows Server 2025 Hotpatch updates
| Month | Update Type | Type | KB article |
|---|---|---|---|
| January | 2025.01 B | Baseline (Restart) | KB5050009 |
| February | 2025.02 B | Hotpatch | KB5052105 |
| March | 2025.03 B | Hotpatch | KB5053636 |
| April | 2025.04 B | Baseline (Restart) | KB5055523 |
May to August
Windows Server 2025 Hotpatch updates
| Month | Update Type | Type | KB article |
|---|---|---|---|
| May | 2025.05 B | Hotpatch | KB5058497 |
| June | 2025.06 B | Hotpatch | KB5060841 |
| July | 2025.07 B | Baseline (Restart) | KB5062553 |
| August | 2025.08 B | Hotpatch | KB5064010 |
September to December
Windows Server 2025 Hotpatch updates
| Month | Update Type | Type | KB article |
|---|---|---|---|
| September | 2025.09 B | Hotpatch | KB5065474 |
| October | 2025.10 B | Baseline (Restart) | KB5066835 |
| November | 2025.11 B | Hotpatch | KB5068966 |
| December | 2025.12 B | Hotpatch | KB5072014 |
Hotpatch calendar 2024
Find all the hotpatch updates for Windows Server 2025 on the calendar.
September to December
Windows Server 2025 Hotpatch updates
| Month | Update Type | Type | KB article |
|---|---|---|---|
| September | 2024.09 B | N/A | N/A |
| October | 2024.10 B | N/A | N/A |
| November | 2024.11 B | Hotpatch | KB5046696 |
| December | 2024.12 B | Hotpatch | KB5048794 |