Uninstall Older Versions of the Zivver OWA add-in

Introduction

Older versions of the Zivver OWA add-in may be present in users’ mailboxes. The deployment of these older versions may not be visible in the Exchange Admin Center, meaning the administrator cannot uninstall the older versions via the interface.

Having an older version of the Zivver OWA add-in can result in negative effects such as:

• When two different versions of Zivver are deployed to the same mailbox, this will likely lead to problems.
• Administrators have no direct insight into or control over the deployments of these older versions via the admin portal.
• Older versions of the Zivver OWA add-in are no longer supported and have been deprecated. As a result, users with an old version will get a pop-up notification in Outlook requesting them to update.
  • This pop-up is also shown in Outlook Desktop/Classic, causing confusion for users and admins, as the pop-up is unrelated to the Zivver Office Plugin and appears for every sent message.

To resolve this, the older version of the Zivver OWA add-in should be identified and removed via PowerShell. You can do this with the PowerShell commands below. Please note that we distinguish between different installation methods:

• Organization App – the Zivver OWA add-in was installed at the organization level by an administrator.
• User App – the Zivver OWA add-in was installed by a user for their own mailbox.

The installation method determines the uninstallation method, which is detailed below.

Info

Microsoft can take up to 72 hours (3 days) to remove the add-in from the mailbox after you execute the steps below.

Note

Please be aware that version 6 of the Zivver OWA add-in has a version number in the format 3.xxx.x. Make sure you are only removing the desired version(s).

Deleting the Zivver OWA Organization App

1. Connect to Exchange Online.

   Connect-ExchangeOnline
   

2. Get an overview of deployed add-ins named “Zivver”.

   Get-App -OrganizationApp | Format-Table -Auto DisplayName,AppVersion,AppId | Where-Object DisplayName -ieq "Zivver"
   

3. Identify the version you want to remove and copy the AppId.

4. Use the AppId to remove the add-in.

   Remove-App -OrganizationApp -AppId <AppId>
   

Deleting the Zivver OWA User App

1. Connect to Exchange Online.

   Connect-ExchangeOnline
   

2. Get an overview of add-ins named “Zivver”.

   Get-App | Format-Table DisplayName,AppVersion,AppId | Where-Object DisplayName -ieq "Zivver"
   

3. Alternatively, create an overview for a single mailbox:

   Get-App -Mailbox user@domain.com | Format-Table DisplayName,AppVersion,AppId | Where-Object DisplayName -ieq "Zivver"
   

4. Identify the version you want to remove and copy the AppId.

5. Use the AppId to remove the add-in.

   Remove-App -Identity <AppId> -Mailbox user@domain.com
   

Updated on 2026-06-18