How to fix problems with the Zoom for Outlook add-in

The following information may be helpful to you if you’re having trouble troubleshooting or solving common issues with Zoom for Outlook. Visit Microsoft’s support site for additional troubleshooting suggestions.

How to troubleshoot common issues with the Zoom for Outlook add-in

authentication error

Issue: Some configuration has been made to the Outlook add-in, but it fails to authenticate and will not let you schedule a meeting.

Suggestion: Your network should be allowed to access the following URLs.

Error in the security settings (Windows, Outlook Web)

Output: There is an error message displayed by the browser stating that it cannot display a dialog box due to its security settings. Please try a different browser or configure your browser so that the domain shown in your address bar is in the same security zone as the [URL].

Suggestion: If your security settings allow adding trusted websites, consider adding Zoom to this list.

  1. Go to Control Panel and open it.
  2. Select the Network and Internet option or the Internet Options option from the menu.
  3. To access the Security tab, click on it.
  4. In the Trusted Sites section, click the Sites tab, and then select the Trusted Sites zone.
  5. Click the Add button at the bottom of the page after entering the URL shown in the error message.
  6. I would suggest you try using the add-in again. If the problem persists, it is recommended to check the settings for the other security zones and ensure that the domain that is displayed in the Office application’s address bar is in the same security zone as the URL that is displayed in the domain of the add-in.

Access error (Windows, Outlook desktop)

Issue: “Access to Trunk***.js is denied” is an error message that appears in the Windows Outlook Console log when the application is launched.


Because the add-in does not have permission to access local settings, the browser must instead grant the add-in permission to access those settings. Follow the steps below to enable access to your account:

  1. If your IT admin hasn’t run icacls %userprofile%/Appdata/LocalLow /t /setintegritylevel (OI)(CI)L for all users, you can ask them to do so.
  2. Start Internet Explorer by clicking the Start button. Make sure you are not currently using the browser in private mode.
  3. If you click on the gear icon, you can select internet options.
  4. To access the Security tab, click the Security button.
  5. You can do this by clicking Trusted Sites and then Sites.
  6. Click the Add button after typing
  7. Check the box next to Enable Protected Mode to enable it.
  8. The security level should be set to Medium-High to ensure a high level of security.
  9. The Advanced tab can be accessed by clicking on it.
  10. Check the box next to Enable DOM Storage in the Security section of the window.

Add-in not working (Windows, Outlook Web)

Output: There is a problem with the Outlook add-in.

Suggestion: If you use Internet Explorer, you should enable script debugging.

  1. The first thing you need to do is open Internet Explorer. If your browser is in private mode, make sure it is not set to private mode.
  2. You can access Internet Options by clicking the gear icon on the toolbar.
  3. Select the Advanced tab from the drop down menu.
  4. It is recommended that you do not select either Disable Script Debugging (Internet Explorer) or Disable Script Debugging (Other) in the Browse section.
    Note: If the problem persists, disable these settings for troubleshooting purposes only. You will be prompted to do so while browsing if you leave it disabled. So don’t forget this. It is important to ensure that both options are enabled once the issue has been resolved.

Add-in is not activated in Office 2013 desktop


If you perform the following tasks, you will not be able to activate the add-in:

  • In Office 2013, you can sign in to your Microsoft account with your credentials.
  • Your Microsoft account can be protected by two-step verification by turning it on.
  • The process of installing an add-in and verifying your identity is described below.

Suggestion: You should check if the latest Office updates have been installed, or you can download the Office 2013 update.

Add-in updates don’t appear on the ribbon (Outlook desktop)

Output: Changes made to ribbon buttons or menu items in the add-in do not take effect when the add-in is updated.

Suggestion: Clear the old versions of Office from the cache in Office.

  • Windows: First you have to delete everything in the folder,
  • Mac: You must delete the contents of the folder
  • iOS: JavaScript in the add-in can be used to force a browser reload by calling window.location.reload(true). Alternatively, you can also reinstall Office.

“Invalid Meeting ID” error.

Output: When attendees try to join a Zoom meeting by clicking a calendar item in Outlook, they receive an error message stating that they have an invalid meeting ID.

Suggestion: Typically this happens after a Zoom meeting has been rescheduled or after a single occurrence of a recurring event has been added to the calendar. It is important that the Zoom meeting is updated in Outlook.

  1. The Outlook calendar item can be opened by clicking the Edit button.
  2. There are three dots on the top toolbar that you need to click on.
  3. If prompted to sign in to your Zoom account, do so.
  4. To access Zoom, click here.
  5. Click Settings on the left side of the screen.
  6. Click Update to apply the changes you made to your meeting options.
  7. The calendar entry can be saved or sent by clicking the Save or Send button.

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frequently asked Questions

There is a problem with the Zoom plugin in the Outlook calendar

  1. You can access the options in Outlook by clicking File and then selecting Options.
  2. Select the Add-Ins menu item in the left menu.
  3. At the bottom of the “Manage” box, you will find a drop-down box where you can select “Disabled Items” and then you need to click “Go…” to go to the next stage.
  4. The Zoom Outlook Plugin can be activated by clicking Activate on the Zoom Outlook Plugin page, which you can find when you are on the Zoom Outlook Plugin page.
  5. Reopen Outlook after closing and reopening it.

Operating Systems (Windows)

  1. Sign in to your Outlook account and open the program.
  2. Click on the File tab in the top left corner of the screen.
  3. Click the info button on the menu bar, then select Manage add-ins from the drop-down menu in the right corner of the screen. To manage your add-ins in Outlook, you need to open a browser and open it in the Add-ins section. …
  4. Adding Zoom for Outlook to your account is as easy as adding it to the Add-ins for Outlook window and clicking the Add button when you’re done.

Below the Zoom Plugin for Microsoft Outlook is a download button that allows you to access the updates on the Download Center page. To complete the installation of the new update, follow the installation wizard after the new update has finished downloading. The best way to ensure your Outlook settings are retained after reopening is to restart Outlook if it’s already open.

You can open the zoom dialog box by clicking the button on the ribbon and then selecting the desired zoom level. It should be noted that in Outlook 2010, 2013, 2016, 2019, 2021, 365 there is a zoom slider located in the status bar of the main Outlook window (on the right side of the window). The reading area can be zoomed using the slider on the right.

With the Ctrl key pressed, you can scroll with the scroll wheel between the scroll bar and the preview window to zoom in or out as you like by using the scroll wheel between the scroll bar and the preview window.

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