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Update windows-autopatch-hotpatch-updates.md #11997

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Jan 29, 2025
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Update windows-autopatch-hotpatch-updates.md #11997

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6 changes: 3 additions & 3 deletions windows/deployment/windows-autopatch/manage/windows-autopatch-hotpatch-updates.md
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Expand Up @@ -40,9 +40,9 @@ VBS must be turned on for a device to be offered Hotpatch updates. For informati

### Arm 64 devices must disable compiled hybrid PE usage (CHPE) (Arm 64 CPU Only)

This requirement only applies to Arm 64 CPU devices when using Hotpatch updates. Hotpatch updates aren't compatible with servicing CHPE OS binaries located in the `%SystemRoot%\SyChpe32` folder. To ensure all the Hotpatch updates are applied, you must set the CHPE disable flag and restart the device to disable CHPE usage. You only need to set this flag one time. The registry setting remains applied through updates. To disable CHPE, set the following registry key:
Path: `**HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management**`
Key value: `**HotPatchRestrictions=1**`
This requirement only applies to Arm 64 CPU devices when using Hotpatch updates. Hotpatch updates aren't compatible with servicing CHPE OS binaries located in the `%SystemRoot%\SyChpe32` folder. To ensure all the Hotpatch updates are applied, you must set the CHPE disable flag and restart the device to disable CHPE usage. You only need to set this flag one time. The registry setting remains applied through updates. To disable CHPE, create and/or set the following DWORD registry key:
Path: `HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management`
DWORD key value: HotPatchRestrictions=1

> [!IMPORTANT]
> This setting is required because it forces the operating system to use the emulation x86-only binaries instead of CHPE binaries on Arm 64 devices. CHPE binaries include native Arm 64 code to improve performance, excluding the CHPE binaries might affect performance or compatibility. Be sure to test application compatibility and performance before rolling out Hotpatch updates widely on Arm 64 CPU based devices.
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