O365 Install Excel Add-ins from internet

Boopathi S 4,036 Reputation points
2026-09-04T14:37:39.84+00:00

Hi Team,

I am unable to install Add-in from Internet. Refer the below screenshotAdd-ins

Please help me what are the registry values to be enabled or which options to check to install Add-ins from Internet

Microsoft 365 and Office | Install, redeem, activate | For business | Windows

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  1. AI answer

    2026-09-04T14:37:57.1633333+00:00

    To install Excel add-ins from the internet, check these Office settings first:

    1. In Excel, go to File > Get Add-ins or Home > Add-ins.
    2. If add-ins do not appear, go to File > Options > Trust Center > Trust Center Settings > Add-ins.
    3. Review the add-in security options:
      • Disable all Application Add-ins (may impair functionality) must be unchecked.
      • If Require Application Add-ins to be signed by Trusted Publisher is enabled, unsigned add-ins will not load.
    4. Restart Excel after changing add-in security settings, because these settings take effect only after exit and restart.

    For Office Add-ins management:

    1. Go to File > Get Add-ins > More Add-ins.
    2. Open the My Add-ins tab.
    3. If add-ins are missing, select Refresh.
    4. Use Manage My Add-in or Upload if adding an add-in from the device.

    If Excel shows that no add-ins are available and mentions privacy settings for optional connected experiences, that points to an Office connectivity or policy restriction rather than a documented registry value in the available guidance.

    If the Get Add-ins feature is blocked or unavailable in the organization, the documented path is to have the Microsoft 365 administrator review whether policy is blocking add-ins and, if needed, open a support ticket through the Microsoft 365 admin center.

    AI-generated content may be incorrect. Read our transparency notes for more information.

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  2. Heimerdinger 295 Reputation points Independent Advisor
    2026-09-04T14:52:45.4933333+00:00

    Hi @Boopathi S,

    To help narrow this down, could you provide:

    1. Is the PC domain-joined and managed through Group Policy or Intune?
    2. Are you signed in to Office with a work/school account?

    If this is a work account, ask the Microsoft 365 administrator to verify whether access to Office Store add-ins has been restricted at the tenant level.

    From the screenshot, the "More Add-ins" button is disabled and Office displays:

    "There are no add-ins available for you. Contact your IT administrator or try changing your privacy settings for Optional connected experiences."

    This is often caused by either:

    • Office Store access being disabled by policy or Group Policy.
    • Optional Connected Experiences being disabled.
    • A Microsoft 365 Apps sign-in or licensing issue.
    • A registry/GPO setting blocking web add-ins.

    If you are a Microsoft 365 administrator, you can check whether Office Store access is restricted at the tenant level by following these steps:

    1. Sign in to the Microsoft 365 Admin Center.
    2. Go to Settings > Org settings.
    3. Select the Services tab.
    4. Open User owned apps and services.
    5. Locate Let users access the Office Store.
    6. Ensure this option is enabled (checked).
    7. Click Save.

    You could refer to this article for a better view: Manage Add-ins in the Microsoft 365 Admin Center - Microsoft 365 admin | Microsoft Learn

    Thank you again for your time and understanding. I really appreciate your patience, and I’m here to help. Looking forward to your response.   

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