List of allowed COM/VSTO add-ins registered in HKCU

Policy ID: L_AllowedCOMAddins
Scope: User Configuration
Supported on: At least Windows Server 2016, Windows 10
Source: Microsoft 365 Apps / Office Administrative Templates (version 5568.1000)
Category: Microsoft Office 2016 › Security Settings

Description

This policy setting allows you to specify COM/VSTO add-ins registered in HKEY_CURRENT_USER (HKCU) that should be allowed to load, overriding the "Block loading of COM/VSTO add-ins registered in HKCU" policy.

Some legitimate add-ins may be installed in HKCU even when deployed by administrators, due to how the independent software vendor (ISV) designed their installer. This policy provides an administrative override to allow specific add-ins to load despite being registered in HKCU.

If you enable this policy setting, you can specify a list of COM/VSTO add-ins that are allowed to load from HKCU. Enter each add-in using its ProgID as the name.

If you disable or don't configure this policy setting, the standard HKCU blocking behavior applies when that policy is enabled.

Options

Allowed COM/VSTO Add-ins:
Enter the ProgID of each COM/VSTO add-in that should be allowed. The value can be any string.

Registry

UserHKEY_CURRENT_USER

HKCU\software\policies\microsoft\office\16.0\common\security\allowedcomaddins View registry values

(list values)REG_SZ

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