Problem: Automatic Logout from UMC after 5 Minutes

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#1

Problem

Users are experiencing automatic logouts from the UMC (Univention Management Console) after 5 minutes of inactivity. This is related to the recent errata update 1105.

:bulb: The errata 1116 changed the default value of the ucr variable portal/reload-tabs-on-logout to false until this bug is fixed.

Explanation

When logging in at UMC, two sessions are created:

  1. A session for the Portal using SAML.
  2. A session for UMC itself.

UMC performs a “passive login” in the background, renewing the session every 5 minutes by default. The errata 1105 introduced a feature that reloads browser tabs when a user logs out, ensuring that the UMC correctly processes external logout actions.
The issue arises when the UMC renews its session in the background, which causes the tab to reload unexpectedly. This behavior can create the impression that users are being logged out automatically.

Solution

To resolve the issue and prevent the browser tab from reloading after every session renewal, you can disable the automatic tab reload feature. This can be done by setting the following UCR variable:

ucr set portal/reload-tabs-on-logout='false'

By applying this change, the UMC session will still renew every 5 minutes, but the browser tab will no longer reload, allowing uninterrupted usage.

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