Knowledge

ERROR_CTX_BAD_VIDEO_MODE - 7025 (0x1B71)

An attempt has been made to connect to a session whose video mode is not supported by the current client.

Updated: Feb 21, 2026

Technical Background

The ERROR_CTX_BAD_VIDEO_MODE error, with the numeric code 7025 and hexadecimal representation 0x1B71, is a specific error that occurs when an attempt is made to connect to a session whose video mode is not supported by the current client. This error indicates a capability limitation rather than a generic failure.

Error Details

The ERROR_CTX_BAD_VIDEO_MODE error typically arises in scenarios where a user or application attempts to establish a remote desktop connection, but the video settings of the target session do not match those supported by the client device. This can include differences in resolution, color depth, refresh rate, and other display-related parameters.

Common Causes

  • Incorrect Video Mode: The video mode requested for the session does not match any modes supported by the client's hardware or software configuration.
  • Client Hardware Limitations: The client device may have limitations on the maximum resolution or color depth it can support, which are incompatible with the target session’s settings.
  • Client Software Configuration: The display settings on the client machine might be configured to use a mode that is not compatible with the remote session.

Real-World Context

This error is particularly relevant in environments where users need to access graphical applications or desktops remotely. It can occur when using Remote Desktop Protocol (RDP) or similar technologies, where the client and server must agree on video settings for proper display functionality.

Is This Error Critical?

The ERROR_CTX_BAD_VIDEO_MODE error is not critical in the sense that it does not indicate a system-wide failure. However, it can prevent users from accessing certain graphical applications or desktops if the video modes are incompatible. It is important to address this issue to ensure smooth operation of remote sessions.

How to Diagnose

Reviewing Operation Context

  • Verify the video settings on both the client and server machines.
  • Check the Remote Desktop Connection properties for any specific display settings that might be causing the conflict.

Validating Parameters

  • Ensure that the target session’s video mode is within the supported range of the client device. This can often be configured through the Remote Desktop Services (RDS) settings on the server side.
  • Confirm that the client machine has the necessary drivers and software to support the required video modes.

Confirming Object Types

  • Ensure that the session being accessed is a graphical session, as non-graphical sessions may not require or support specific video modes.

How to Resolve

Correct Parameter Usage

  • Adjust the Remote Desktop Connection settings on the client machine to match the supported video modes of the target session. This can be done through the RDP properties dialog box.
  • Ensure that the server’s Remote Desktop Services are configured with compatible display settings.

Adjust Operation Context

  • If using a third-party remote desktop software, check its configuration for any specific display settings that might need adjustment.
  • For hardware limitations, consider upgrading the client machine's video card or drivers if necessary.

Restore Data

  • In cases where data corruption is suspected, restore default settings and reconfigure as needed.

Retry Operation with Valid Inputs

  • After making adjustments to the client or server settings, attempt to reconnect to the session. If the issue persists, consider restarting both the client and server machines.

Developer Notes

When developing applications that interact with remote desktop sessions, it is important to handle this error gracefully. Developers should provide clear feedback to users about why a connection failed due to an unsupported video mode and offer guidance on how to resolve the issue.

Related Errors

FAQ

Q: What causes the ERROR_CTX_BAD_VIDEO_MODE error?

A: The error occurs when the video mode requested for a remote desktop session is not supported by the client device. This can be due to hardware limitations, incorrect display settings on either the client or server side, or mismatched Remote Desktop Services configurations.

Q: How do I resolve this issue?

A: Adjust the video settings on both the client and server machines to ensure compatibility. Check RDP properties and Remote Desktop Services configurations as needed. If hardware limitations are a factor, consider upgrading the client machine's display capabilities.

Summary

The ERROR_CTX_BAD_VIDEO_MODE error indicates that an attempt was made to connect to a remote desktop session with video settings not supported by the current client device. This can be resolved by ensuring compatibility between the client and server video modes through appropriate configuration adjustments.