Skip to content
English
Go to yourdolphin.com
  • There are no suggestions because the search field is empty.

Secure Desktop Becomes Invisible and Unresponsive When Running SuperNova After Installing KB5120998

Issue resolved in SuperNova and Dolphin ScreenReader 25.06 for Windows 11 25H2 and 26H2 systems affected by KB5120998.

 Overview

Some users previously experienced an issue when running Dolphin SuperNova or Dolphin ScreenReader on Windows 11 25H2 and 26H2 where the Secure Desktop would briefly appear before disappearing and being replaced by the normal desktop view. Although the Secure Desktop was no longer visible, it remained active in the background, preventing interaction with the desktop until it was dismissed.

This issue was observed during SuperNova upgrades, User Account Control (UAC) prompts, and when accessing Windows security options using CTRL + ALT + DELETE.

Affected Configurations

The issue was reproduced under the following conditions:

  • Operating System: Windows 11 25H2 and 26H2 (Build 26200.9457 and later)
  • Windows Update: KB5120998 installed
  • Product Version: SuperNova and Dolphin ScreenReader version 25.00 through 25.05

Symptoms

When a Secure Desktop prompt was triggered:

  • The Secure Desktop appeared briefly.
  • The original desktop was then displayed instead.
  • A Dolphin focus highlight could remain visible where the Secure Desktop dialog originally appeared.
  • Mouse and keyboard interaction became unavailable.
  • The system appeared frozen despite remaining responsive.
  • Pressing Escape dismissed the hidden Secure Desktop and restored normal operation.

Scenarios Where the Issue May Occur

The issue was observed when:

  • Updating SuperNova or Dolphin ScreenReader.
  • Launching an installer during a product update.
  • Displaying a User Account Control (UAC) prompt.
  • Accessing the Windows Security screen using CTRL + ALT + DELETE.
  • Displaying other Secure Desktop dialogs within Windows.

Cause

Investigation identified Windows Update KB5120998 as the trigger for this behaviour on affected Windows 11 25H2 and 26H2 systems when SuperNova or Dolphin ScreenReader was running.

Resolution

Fixed in SuperNova and Dolphin ScreenReader 25.06

This issue has been resolved in SuperNova and Dolphin ScreenReader version 25.06.

Users affected by this issue should update to version 25.06 or later. Following the update, Secure Desktop dialogs, UAC prompts, Windows Security screens, and product installers should display and function normally.

Recommended Action

To resolve the issue:

  1. Update SuperNova or Dolphin ScreenReader to version 25.06 or later.
  2. Restart the computer after installation if prompted.
  3. Confirm that Secure Desktop prompts display correctly when triggered.

If Secure Desktop issues continue after upgrading, please contact Dolphin Support and provide:

  • Your product version.
  • Windows build number.
  • Confirmation of whether KB5120998 is installed.
  • Details of the Secure Desktop prompt that triggered the issue.

Status

✅ Resolved

Dolphin successfully reproduced the issue, identified its interaction with KB5120998, and implemented a fix in SuperNova and Dolphin ScreenReader 25.06.

Additional Information

Users who previously uninstalled KB5120998 as a workaround can reinstall the update after upgrading to SuperNova or Dolphin ScreenReader 25.06, subject to their organisation's update policies.

The temporary workaround of pressing Escape to dismiss the hidden Secure Desktop should no longer be required after upgrading to version 25.06.

This article was last updated 21/10/2026.