Windows Hotpatch Updates

Hotpatch is a separate security-servicing program for eligible, enrolled devices. Hotpatch releases do not require an OS restart; baselines do. Other updates, prerequisites and device configuration can still require a restart. This history does not assess a device's eligibility or compliance.

Windows 11 Enterprise 24H2, 25H2 and 26H2 sources are tracked independently. Windows Server 2022 requires a supported Datacenter Azure Edition image; Server 2025 supports eligible Azure images and Azure Arc-connected Standard/Datacenter systems. See the official Windows client prerequisites and Windows Server prerequisites.

Supplemental component fixes are listed separately. Unknown dates, builds and restart requirements are not inferred. A calendar baseline is context from Microsoft's published schedule, not a substitute for the KB's installation prerequisites.

Published releases and baseline notes

170 entries across 5 official sources. Last successful refresh: . Automatic collection every 6 hours.

Reset

170 matching entries. Shared KBs remain distinct by product, version and build.

Product / versionKB / detailsRelease date BuildKind / OS restartCalendar baseline
Windows Server Datacenter Azure Edition 2022 Baseline note
Details

October 8, 2024—Baseline

Microsoft release-history source

Some article details are unavailable. Open Microsoft's KB for the authoritative information.

 2024-10-08 Not documented Baseline
Restart required
 Not documented
Windows Server Datacenter Azure Edition 2022 KB5042880
Details

September 10, 2024—Hotpatch KB5042880 (OS Build 20348.2695)

Microsoft release-history source

 2024-09-10 20348.2695 Hotpatch
No OS restart
 KB5041160
Windows Server Datacenter Azure Edition 2022 Baseline note
Details

August 13, 2024—Baseline

Microsoft release-history source

Some article details are unavailable. Open Microsoft's KB for the authoritative information.

 2024-08-13 Not documented Baseline
Restart required
 Not documented
Windows Server Datacenter Azure Edition 2022 Baseline note
Details

July 9, 2024—Baseline

Microsoft release-history source

Some article details are unavailable. Open Microsoft's KB for the authoritative information.

 2024-07-09 Not documented Baseline
Restart required
 Not documented
Windows Server Datacenter Azure Edition 2022 KB5039330
Details

June 11, 2024—Hotpatch KB5039330 (OS Build 20348.2522)

Microsoft release-history source

 2024-06-11 20348.2522 Hotpatch
No OS restart
 KB50369809
Windows Server Datacenter Azure Edition 2022 KB5037848
Details

May 14, 2024—Hotpatch KB5037848 (OS Build 20348.2458)

Microsoft release-history source

 2024-05-14 20348.2458 Hotpatch
No OS restart
 KB50369809
Windows Server Datacenter Azure Edition 2022 KB5036909
Details

April 9, 2024—Baseline

Microsoft release-history source

Some article details are unavailable. Open Microsoft's KB for the authoritative information.

 2024-04-09 Not documented Baseline
Restart required
 Not documented
Windows Server Datacenter Azure Edition 2022 KB5035959
Details

March 12, 2024—Hotpatch KB5035959 (OS Build 20348.2333)

Microsoft release-history source

 2024-03-12 20348.2333 Hotpatch
No OS restart
 KB5034129
Windows Server Datacenter Azure Edition 2022 KB5034860
Details

February 13, 2024—Hotpatch KB5034860 (OS Build 20348.2277)

Microsoft release-history source

 2024-02-13 20348.2277 Hotpatch
No OS restart
 KB5034129
Windows Server Datacenter Azure Edition 2022 Baseline note
Details

January 9, 2024—Baseline

Microsoft release-history source

Some article details are unavailable. Open Microsoft's KB for the authoritative information.

 2024-01-09 Not documented Baseline
Restart required
 Not documented
Windows Server Datacenter Azure Edition 2022 KB5033464
Details

December 12, 2023—Hotpatch KB5033464 (OS Build 20348.2144)

Microsoft release-history source

 2023-12-12 20348.2144 Hotpatch
No OS restart
 Not documented
Windows Server Datacenter Azure Edition 2022 KB5032304
Details

November 14, 2023—Hotpatch KB5032304 (OS Build 20348.2091)

Microsoft release-history source

 2023-11-14 20348.2091 Hotpatch
No OS restart
 Not documented
Windows Server Datacenter Azure Edition 2022 Baseline note
Details

October 10, 2023—Baseline

Microsoft release-history source

Some article details are unavailable. Open Microsoft's KB for the authoritative information.

 2023-10-10 Not documented Baseline
Restart required
 Not documented
Windows Server Datacenter Azure Edition 2022 KB5030325
Details

September 12, 2023—Hotpatch KB5030325 (OS Build 20348.1964)

Microsoft release-history source

 2023-09-12 20348.1964 Hotpatch
No OS restart
 Not documented
Windows Server Datacenter Azure Edition 2022 KB5029367
Details

August 8, 2023—Hotpatch KB5029367 (OS Build 20348.1903)

Microsoft release-history source

 2023-08-08 20348.1903 Hotpatch
No OS restart
 Not documented
Windows Server Datacenter Azure Edition 2022 Baseline note
Details

July 11, 2023—Baseline

Microsoft release-history source

Some article details are unavailable. Open Microsoft's KB for the authoritative information.

 2023-07-11 Not documented Baseline
Restart required
 Not documented
Windows Server Datacenter Azure Edition 2022 KB5027319
Details

June 13, 2023—Hotpatch KB5027319 (OS Build 20348.1784)

Microsoft release-history source

 2023-06-13 20348.1784 Hotpatch
No OS restart
 Not documented
Windows Server Datacenter Azure Edition 2022 KB5026456
Details

May 9, 2023—Hotpatch KB5026456 (OS Build 20348.1724)

Microsoft release-history source

 2023-05-09 20348.1724 Hotpatch
No OS restart
 Not documented
Windows Server Datacenter Azure Edition 2022 Baseline note
Details

April 11, 2023—Baseline

Microsoft release-history source

Some article details are unavailable. Open Microsoft's KB for the authoritative information.

 2023-04-11 Not documented Baseline
Restart required
 Not documented
Windows Server Datacenter Azure Edition 2022 KB5023786
Details

March 14, 2023—Hotpatch KB5023786 (OS Build 20348.1602)

Microsoft release-history source

 2023-03-14 20348.1602 Hotpatch
No OS restart
 Not documented
Windows Server Datacenter Azure Edition 2022 KB5022921
Details

February 14, 2023—Hotpatch KB5022921 (OS Build 20348.1544)

Microsoft release-history source

 2023-02-14 20348.1544 Hotpatch
No OS restart
 Not documented
Windows Server Datacenter Azure Edition 2022 Baseline note
Details

January 10, 2023—Baseline

Microsoft release-history source

Some article details are unavailable. Open Microsoft's KB for the authoritative information.

 2023-01-10 Not documented Baseline
Restart required
 Not documented
Windows Server Datacenter Azure Edition 2022 Baseline note
Details

December 13, 2022—Baseline

Microsoft release-history source

Some article details are unavailable. Open Microsoft's KB for the authoritative information.

 2022-12-13 Not documented Baseline
Restart required
 Not documented
Windows Server Datacenter Azure Edition 2022 KB5019080
Details

November 8, 2022—Hotpatch KB5019080 (OS Build 20348.1251)

Microsoft release-history source

 2022-11-08 20348.1251 Hotpatch
No OS restart
 Not documented
Windows Server Datacenter Azure Edition 2022 Baseline note
Details

October 11, 2022—Baseline

Microsoft release-history source

Some article details are unavailable. Open Microsoft's KB for the authoritative information.

 2022-10-11 Not documented Baseline
Restart required
 Not documented
Windows Server Datacenter Azure Edition 2022 KB5017392
Details

September 13, 2022—Hotpatch KB5017392 (OS Build 20348.916)

Microsoft release-history source

 2022-09-13 20348.916 Hotpatch
No OS restart
 Not documented
Windows Server Datacenter Azure Edition 2022 Baseline note
Details

August 9, 2022—Baseline

Microsoft release-history source

Some article details are unavailable. Open Microsoft's KB for the authoritative information.

 2022-08-09 Not documented Baseline
Restart required
 Not documented
Windows Server Datacenter Azure Edition 2022 Baseline note
Details

July 12, 2022—Baseline

Microsoft release-history source

Some article details are unavailable. Open Microsoft's KB for the authoritative information.

 2022-07-12 Not documented Baseline
Restart required
 Not documented
Windows Server Datacenter Azure Edition 2022 KB5014677
Details

June 14, 2022—Hotpatch KB5014677 (OS Build 20348.770)

Microsoft release-history source

 2022-06-14 20348.770 Hotpatch
No OS restart
 Not documented
Windows Server Datacenter Azure Edition 2022 Baseline note
Details

May 10, 2022—Baseline

Microsoft release-history source

Some article details are unavailable. Open Microsoft's KB for the authoritative information.

 2022-05-10 Not documented Baseline
Restart required
 Not documented
Windows Server Datacenter Azure Edition 2022 Baseline note
Details

April 12, 2022—Baseline

Microsoft release-history source

Some article details are unavailable. Open Microsoft's KB for the authoritative information.

 2022-04-12 Not documented Baseline
Restart required
 Not documented
Windows Server Datacenter Azure Edition 2022 KB5011580
Details

March 8, 2022—Hotpatch KB5011580 (OS Build 20348.587)

Microsoft release-history source

 2022-03-08 20348.587 Hotpatch
No OS restart
 Not documented
Windows Server Datacenter Azure Edition 2022 KB5010456
Details

February 8, 2022—Hotpatch KB5010456 (OS Build 20348.525)

Microsoft release-history source

 2022-02-08 20348.525 Hotpatch
No OS restart
 Not documented
Windows 11 Enterprise 24H2 KB5123273
Details

KB5123273: Security Update for Pluton Devices (OS Builds 26100.9106 and 26200.9106)

Microsoft release-history source

 Not documented 26100.9106 Supplemental
Restart: not documented
 Not documented
Windows 11 Enterprise 24H2 KB5123607
Details

KB5123607: Security Update (OS Builds 26100.9106 and 26200.9106)

Microsoft release-history source

 Not documented 26100.9106 Supplemental
Restart: not documented
 Not documented
Windows 11 Enterprise 24H2 KB5074204
Details

KB5074204: Security Update for Windows PowerShell (OS Builds 26100.7392 and 26200.7392)

Microsoft release-history source

 Not documented 26100.7392 Supplemental
Restart: not documented
 Not documented
Windows 11 Enterprise 24H2 KB5066360
Details

KB5066360—Security Update for Windows PowerShell (Hotpatch)

Microsoft release-history source

 Not documented Not documented Supplemental
Restart: not documented
 Not documented
Windows 11 Enterprise 24H2 KB5061096
Details

KB5061096—Security Update for Windows PowerShell (Hotpatch)

Microsoft release-history source

 Not documented Not documented Supplemental
Restart: not documented
 Not documented
Windows 11 Enterprise 24H2 KB5101650
Details

KB5101650

Microsoft release-history source

Some article details are unavailable. Open Microsoft's KB for the authoritative information.

 Not documented Not documented Baseline
Restart required
 Not documented
Windows 11 Enterprise 24H2 KB5120994
Details

KB5120994

Microsoft release-history source

Some article details are unavailable. Open Microsoft's KB for the authoritative information.

 Not documented Not documented Hotpatch
No OS restart
 Not documented
Windows 11 Enterprise 24H2 KB5124008
Details

KB5124008

Microsoft release-history source

Some article details are unavailable. Open Microsoft's KB for the authoritative information.

 Not documented Not documented Baseline
Restart required
 Not documented
Windows 11 Enterprise 25H2 KB5123273
Details

KB5123273: Security Update for Pluton Devices (OS Builds 26100.9106 and 26200.9106)

Microsoft release-history source

 Not documented 26200.9106 Supplemental
Restart: not documented
 Not documented
Windows 11 Enterprise 25H2 KB5123607
Details

KB5123607: Security Update (OS Builds 26100.9106 and 26200.9106)

Microsoft release-history source

 Not documented 26200.9106 Supplemental
Restart: not documented
 Not documented
Windows 11 Enterprise 25H2 KB5074204
Details

KB5074204: Security Update for Windows PowerShell (OS Builds 26100.7392 and 26200.7392)

Microsoft release-history source

 Not documented 26200.7392 Supplemental
Restart: not documented
 Not documented
Windows 11 Enterprise 25H2 KB5101650
Details

KB5101650

Microsoft release-history source

Some article details are unavailable. Open Microsoft's KB for the authoritative information.

 Not documented Not documented Baseline
Restart required
 Not documented
Windows 11 Enterprise 25H2 KB5120994
Details

KB5120994

Microsoft release-history source

Some article details are unavailable. Open Microsoft's KB for the authoritative information.

 Not documented Not documented Hotpatch
No OS restart
 Not documented
Windows 11 Enterprise 25H2 KB5124008
Details

KB5124008

Microsoft release-history source

Some article details are unavailable. Open Microsoft's KB for the authoritative information.

 Not documented Not documented Baseline
Restart required
 Not documented
Windows Server 2025 KB5074204
Details

KB5074204: Security Update for Windows PowerShell (OS Build 26100.7392)

Microsoft release-history source

Some article details are unavailable. Open Microsoft's KB for the authoritative information.

 Not documented 26100.7392 Supplemental
Restart: not documented
 Not documented
Windows Server 2025 KB5066360
Details

KB5066360—Security Update for Windows PowerShell (Hotpatch)

Microsoft release-history source

Some article details are unavailable. Open Microsoft's KB for the authoritative information.

 Not documented Not documented Supplemental
Restart: not documented
 Not documented
Windows Server 2025 KB5061096
Details

KB5061096—Security Update for Windows PowerShell

Microsoft release-history source

Some article details are unavailable. Open Microsoft's KB for the authoritative information.

 Not documented Not documented Supplemental
Restart: not documented
 Not documented
Microsoft calendars, including months without a documented KB

These are the source's published calendar labels, not proof that an update has been released. Unlinked months are not counted as published patches. Older transposed calendars without KB references are not converted into release records.

Product / versionPeriodKindKBSource
Windows 11 Enterprise 24H22026.12Hotpatch No KB documentedMicrosoft calendar
Windows 11 Enterprise 25H22026.12Hotpatch No KB documentedMicrosoft calendar
Windows Server 20252026.12Hotpatch No KB documentedMicrosoft calendar
Windows Server Datacenter Azure Edition 20222026.12Hotpatch No KB documentedMicrosoft calendar
Windows 11 Enterprise 24H22026.11Hotpatch No KB documentedMicrosoft calendar
Windows 11 Enterprise 25H22026.11Hotpatch No KB documentedMicrosoft calendar
Windows Server 20252026.11Hotpatch No KB documentedMicrosoft calendar
Windows Server Datacenter Azure Edition 20222026.11Hotpatch No KB documentedMicrosoft calendar
Windows 11 Enterprise 24H22026.10Baseline No KB documentedMicrosoft calendar
Windows 11 Enterprise 25H22026.10Baseline No KB documentedMicrosoft calendar
Windows 11 Enterprise 26H22026.10Baseline No KB documentedMicrosoft calendar
Windows Server 20252026.10Baseline No KB documentedMicrosoft calendar
Windows Server Datacenter Azure Edition 20222026.10Baseline No KB documentedMicrosoft calendar
Windows 11 Enterprise 24H22026.09Baseline KB5124008Microsoft calendar
Windows 11 Enterprise 25H22026.09Baseline KB5124008Microsoft calendar
Windows Server 20252026.09Baseline No KB documentedMicrosoft calendar
Windows Server Datacenter Azure Edition 20222026.09Baseline No KB documentedMicrosoft calendar
Windows 11 Enterprise 24H22026.08Hotpatch KB5120994Microsoft calendar
Windows 11 Enterprise 25H22026.08Hotpatch KB5120994Microsoft calendar
Windows Server 20252026.08Hotpatch KB5120228Microsoft calendar
Windows Server Datacenter Azure Edition 20222026.08Hotpatch KB5120229Microsoft calendar
Windows 11 Enterprise 24H22026.07Baseline KB5101650Microsoft calendar
Windows 11 Enterprise 25H22026.07Baseline KB5101650Microsoft calendar
Windows Server 20252026.07Baseline KB5099536Microsoft calendar
Windows Server Datacenter Azure Edition 20222026.07Baseline KB5099540Microsoft calendar
Windows 11 Enterprise 24H22026.06Baseline KB5094126Microsoft calendar
Windows 11 Enterprise 25H22026.06Baseline KB5094126Microsoft calendar
Windows Server 20252026.06Baseline KB5094125Microsoft calendar
Windows Server Datacenter Azure Edition 20222026.06Baseline KB5094128Microsoft calendar
Windows 11 Enterprise 24H22026.05Hotpatch KB5089466Microsoft calendar
Windows 11 Enterprise 25H22026.05Hotpatch KB5089466Microsoft calendar
Windows Server 20252026.05Hotpatch KB5087423Microsoft calendar
Windows Server Datacenter Azure Edition 20222026.05Hotpatch KB5087424Microsoft calendar
Windows 11 Enterprise 24H22026.04Baseline KB5083769Microsoft calendar
Windows 11 Enterprise 25H22026.04Baseline KB5083769Microsoft calendar
Windows Server 20252026.04Baseline KB5082063Microsoft calendar
Windows Server Datacenter Azure Edition 20222026.04Baseline KB5082142Microsoft calendar
Windows 11 Enterprise 24H22026.03Hotpatch KB5079420Microsoft calendar
Windows 11 Enterprise 25H22026.03Hotpatch KB5079420Microsoft calendar
Windows Server 20252026.03Hotpatch KB5078736Microsoft calendar
Windows Server Datacenter Azure Edition 20222026.03Hotpatch KB5078737Microsoft calendar
Windows 11 Enterprise 24H22026.02Hotpatch KB5077212Microsoft calendar
Windows 11 Enterprise 25H22026.02Hotpatch KB5077212Microsoft calendar
Windows Server 20252026.02Hotpatch KB5075942Microsoft calendar
Windows Server Datacenter Azure Edition 20222026.02Hotpatch KB5075943Microsoft calendar
Windows 11 Enterprise 24H22026.01Baseline KB5074109Microsoft calendar
Windows 11 Enterprise 25H22026.01Baseline KB5074109Microsoft calendar
Windows Server 20252026.01Baseline KB5073379Microsoft calendar
Windows Server Datacenter Azure Edition 20222026.01Baseline KB5073457Microsoft calendar
Windows 11 Enterprise 24H22025.12Hotpatch KB5072014Microsoft calendar
Windows 11 Enterprise 25H22025.12Hotpatch KB5072014Microsoft calendar
Windows Server 20252025.12Hotpatch KB5072014Microsoft calendar
Windows Server Datacenter Azure Edition 20222025.12Hotpatch KB5071413Microsoft calendar
Windows 11 Enterprise 24H22025.11Hotpatch KB5068966Microsoft calendar
Windows 11 Enterprise 25H22025.11Hotpatch KB5068966Microsoft calendar
Windows Server 20252025.11Hotpatch KB5068966Microsoft calendar
Windows Server Datacenter Azure Edition 20222025.11Hotpatch KB5068840Microsoft calendar
Windows 11 Enterprise 24H22025.10Baseline KB5066835Microsoft calendar
Windows 11 Enterprise 25H22025.10Baseline KB5066835Microsoft calendar
Windows Server 20252025.10Baseline KB5066835Microsoft calendar
Windows Server Datacenter Azure Edition 20222025.10Baseline KB5066782Microsoft calendar
Windows 11 Enterprise 24H22025.09Hotpatch KB5065474Microsoft calendar
Windows Server 20252025.09Hotpatch KB5065474Microsoft calendar
Windows Server Datacenter Azure Edition 20222025.09Hotpatch KB5065306Microsoft calendar
Windows 11 Enterprise 24H22025.08Hotpatch KB5064010Microsoft calendar
Windows Server 20252025.08Hotpatch KB5064010Microsoft calendar
Windows Server Datacenter Azure Edition 20222025.08Hotpatch KB5063812Microsoft calendar
Windows 11 Enterprise 24H22025.07Baseline KB5062553Microsoft calendar
Windows Server 20252025.07Baseline KB5062553Microsoft calendar
Windows Server Datacenter Azure Edition 20222025.07Baseline KB5062572Microsoft calendar
Windows 11 Enterprise 24H22025.06Hotpatch KB5060841Microsoft calendar
Windows Server 20252025.06Hotpatch KB5060841Microsoft calendar
Windows Server Datacenter Azure Edition 20222025.06Hotpatch KB5060525Microsoft calendar
Windows 11 Enterprise 24H22025.05Hotpatch KB5058497Microsoft calendar
Windows Server 20252025.05Hotpatch KB5058497Microsoft calendar
Windows Server Datacenter Azure Edition 20222025.05Hotpatch KB5058500Microsoft calendar
Windows 11 Enterprise 24H22025.04Baseline KB5055523Microsoft calendar
Windows Server 20252025.04Baseline KB5055523Microsoft calendar
Windows Server Datacenter Azure Edition 20222025.04Baseline KB5055526Microsoft calendar
Windows 11 Enterprise 24H22025.03Hotpatch KB5053636Microsoft calendar
Windows Server 20252025.03Hotpatch KB5053636Microsoft calendar
Windows Server Datacenter Azure Edition 20222025.03Hotpatch KB5053638Microsoft calendar
Windows 11 Enterprise 24H22025.02Hotpatch KB5052105Microsoft calendar
Windows Server 20252025.02Hotpatch KB5052105Microsoft calendar
Windows Server Datacenter Azure Edition 20222025.02Hotpatch KB5052106Microsoft calendar
Windows 11 Enterprise 24H22025.01Baseline KB5050009Microsoft calendar
Windows Server 20252025.01Baseline KB5050009Microsoft calendar
Windows Server Datacenter Azure Edition 20222025.01Baseline KB5049983Microsoft calendar
Windows 11 Enterprise 24H22024.12Hotpatch KB5048794Microsoft calendar
Windows Server 20252024.12Hotpatch KB5048794Microsoft calendar
Windows Server Datacenter Azure Edition 20222024.12Hotpatch KB5048800Microsoft calendar
Windows 11 Enterprise 24H22024.11Hotpatch KB5046696Microsoft calendar
Windows Server 20252024.11Hotpatch KB5046696Microsoft calendar
Windows Server Datacenter Azure Edition 20222024.11Hotpatch KB5046698Microsoft calendar
Windows Server Datacenter Azure Edition 20222024.10Baseline KB5044281Microsoft calendar
Windows Server Datacenter Azure Edition 20222024.09Hotpatch KB5042880Microsoft calendar
Windows Server Datacenter Azure Edition 20222024.08Baseline KB5041160Microsoft calendar
Windows Server Datacenter Azure Edition 20222024.07Baseline KB5040437Microsoft calendar
Windows Server Datacenter Azure Edition 20222024.06Hotpatch KB5039330Microsoft calendar
Windows Server Datacenter Azure Edition 20222024.05Hotpatch KB5037848Microsoft calendar
Windows Server Datacenter Azure Edition 20222024.04Baseline KB50369809Microsoft calendar
Windows Server Datacenter Azure Edition 20222024.03Hotpatch KB5035959Microsoft calendar
Windows Server Datacenter Azure Edition 20222024.02Hotpatch KB5034860Microsoft calendar
Windows Server Datacenter Azure Edition 20222024.01Baseline KB5034129Microsoft calendar

Source coverage

Windows 11 Enterprise 24H2: 38 entries; 0 different-build rows and 0 unsafe links excluded.

Windows 11 Enterprise 25H2: 25 entries; 0 different-build rows and 0 unsafe links excluded.

Windows 11 Enterprise 26H2: 0 entries; 19 different-build rows and 0 unsafe links excluded. This source currently provides no verifiable release for this build family. Rows for other versions are not relabeled.

Windows Server 2025: 31 entries; 0 different-build rows and 0 unsafe links excluded.

Windows Server Datacenter Azure Edition 2022: 76 entries; 0 different-build rows and 0 unsafe links excluded.

Programmatic access: GET /api/WindowsVersions/hotpatch. See API access and authentication.