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Merge pull request #314684 from sinjiniroy1/patch-3
Revise author and add March/February 2026 updates
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‎articles/cloud-services-extended-support/cloud-services-guestos-microsoft-security-response-center-releases.md‎

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@@ -3,13 +3,13 @@ title: List of updates applied to the Azure Guest OS | Microsoft Docs
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description: This article lists the Microsoft Security Response Center updates applied to different Azure Guest OS. See if an update applies to your Guest OS.
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services: cloud-services
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ms.subservice: guest-os-patching
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author: srtiruma
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author: sinjiniroy
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ms.assetid: d0a272a9-ed01-4f4c-a0b3-bd5e841bdd77
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ms.service: azure-cloud-services-classic
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ms.topic: concept-article
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ms.date: 02/26/2026
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ms.date: 04/14/2026
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ms.update-cycle: 3650-days
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ms.author: srtiruma
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ms.author: sinjiniroy
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ms.custom: compute-evergreen
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---
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The following tables show the Microsoft Security Response Center (MSRC) updates applied to the Azure Guest OS. Search this article to determine if a particular update applies to your Guest OS. Updates always carry forward for the particular [family][family-explain] they were introduced in.
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## March 2026 Guest OS
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| Product Category | Parent KB Article | Vulnerability Description | Guest OS | Date First Introduced |
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| --- | --- | --- | --- | --- |
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| Rel 26-03 | [5078938] | Latest Cumulative Update(LCU) | [5.116] | 10-Mar-26
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| Rel 26-03 | [5078752] | Latest Cumulative Update(LCU) | [6.92] | 10-Mar-26
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| Rel 26-03 | [5078766] | Latest Cumulative Update(LCU) | [7.62] | 10-Mar-26
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| Rel 26-03 | [5066136] | .NET Framework 4.8 Security and Quality Rollup LKG | [5.116] | 14-Oct-25
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| Rel 26-03 | [5066143] | .NET Framework DotNet | [6.92] | 14-Oct-25
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| Rel 26-03 | [5066139] | .NET Framework 4.8 Security and Quality Rollup LKG | [7.62] | 14-Oct-25
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| Rel 26-03 | [5078763] | Servicing Stack Update | [7.62] | 10-Mar-26
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| Rel 26-03 | [4494175] | January '20 Microcode | [5.116] | 10-Mar-26
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| Rel 26-03 | [4494175] | January '20 Microcode | [6.92] | 10-Mar-26
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| Rel 26-03 | [5075902] | Feb-26 SSU LKG | [5.116] | 10-Mar-26
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| Rel 26-03 | [5075903] | Feb-26 SSU LKG | [6.92] | 10-Mar-26
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[5078938]: https://support.microsoft.com/kb/5078938
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[5078752]: https://support.microsoft.com/kb/5078752
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[5078766]: https://support.microsoft.com/kb/5078766
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[5066136]: https://support.microsoft.com/kb/5066136
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[5066143]: https://support.microsoft.com/kb/5066143
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[5066139]: https://support.microsoft.com/kb/5066139
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[5078763]: https://support.microsoft.com/kb/5078766
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[4494175]: https://support.microsoft.com/kb/4494175
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[4494175]: https://support.microsoft.com/kb/4494175
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[5075902]: https://support.microsoft.com/kb/5075902
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[5075903]: https://support.microsoft.com/kb/5075904
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[5.116]: ./cloud-services-guestos-update-matrix.md#family-5-releases
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[6.92]: ./cloud-services-guestos-update-matrix.md#family-6-releases
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[7.62]: ./cloud-services-guestos-update-matrix.md#family-7-releases
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## February 2026 Guest OS
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| Product Category | Parent KB Article | Vulnerability Description | Guest OS | Date First Introduced |
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| --- | --- | --- | --- | --- |
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| Rel 26-02 | [5075999] | Latest Cumulative Update(LCU) | [5.115] | 10-Feb-26
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| Rel 26-02 | [5075904] | Latest Cumulative Update(LCU) | [6.91] | 10-Feb-26
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| Rel 26-02 | [5075906] | Latest Cumulative Update(LCU) | [7.61] | 10-Feb-26
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| Rel 26-02 | [5066136] | .NET Framework 4.8 Security and Quality Rollup LKG | [5.115] | 14-Oct-25
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| Rel 26-02 | [5066143] | .NET Framework DotNet | [6.91] | 14-Oct-25
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| Rel 26-02 | [5066139] | .NET Framework 4.8 Security and Quality Rollup LKG | [7.61] | 14-Oct-25
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| Rel 26-02 | [5075905] | Servicing Stack Update | [7.61] | 10-Feb-26
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| Rel 26-02 | [4494175] | January '20 Microcode | [5.115] | 10-Feb-26
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| Rel 26-02 | [4494175] | January '20 Microcode | [6.91] | 10-Feb-26
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| Rel 26-02 | [5075902] | SSU LKG | [5.115] | 10-Feb-26
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| Rel 26-02 | [5075903] | SSU LKG | [6.91] | 10-Feb-26
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[5075999]: https://support.microsoft.com/kb/5075999
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[5075904]: https://support.microsoft.com/kb/5075904
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[5075906]: https://support.microsoft.com/kb/5075906
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[5066136]: https://support.microsoft.com/kb/5066136
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[5066143]: https://support.microsoft.com/kb/5066143
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[5066139]: https://support.microsoft.com/kb/5066139
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[5075905]: https://support.microsoft.com/kb/5082314
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[4494175]: https://support.microsoft.com/kb/4494175
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[4494175]: https://support.microsoft.com/kb/4494175
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[5075902]: https://support.microsoft.com/kb/5075902
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[5075903]: https://support.microsoft.com/kb/5075904
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[5.115]: ./cloud-services-guestos-update-matrix.md#family-5-releases
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[6.91]: ./cloud-services-guestos-update-matrix.md#family-6-releases
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[7.61]: ./cloud-services-guestos-update-matrix.md#family-7-releases
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## January 2026 Guest OS
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| Product Category | Parent KB Article | Vulnerability Description | Guest OS | Date First Introduced |
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| --- | --- | --- | --- | --- |

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