Do you have problems with the Zivver Office Plugin in Outlook, such as a failed login, an SSO error, a “system error” message, or an add-in that freezes or does not load? An outdated plugin version is a likely cause, even when the problems look unrelated.

Cause

Zivver ended support for Zivver Office Plugin versions up to and including 6.9.0 on September 23, 2026. The lowest supported version is 6.10.2. An unsupported version can no longer sign in or load reliably.

Solution

Check the installed version

1. Open Outlook and go to the Zivver tab.
2. Click About Zivver.
   A new window opens that shows the version numbers.

Is the version 6.10.2 or newer? Then an outdated version is not the cause. Go to Still need help?.

Update the plugin

1. Update the plugin by using the update prompt in Outlook, or install the latest version by following Install the Zivver Office Plugin.
   Does your organization manage the installation of software? Then your IT department has to update the plugin for you.
2. Close Outlook completely.
3. Start Outlook again.
4. Does the problem persist? Close and start Outlook once more. This often solves the problem.
5. Does the login still fail? Clear the cached credentials and sign in again.

Note

You can still send and read Zivver messages in the Zivver WebApp while the plugin is not updated.

For more information about update notifications, see the FAQ about the update notification.

Still need help?

Does the problem persist on the latest version? Contact Zivver Support and include the exact version number of the plugin.