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ERROR_CTX_SHADOW_ENDED_BY_MODE_CHANGE
ERROR_CTX_SHADOW_ENDED_BY_MODE_CHANGE means Windows stopped remote control of the console because the display mode changed. Console shadowing cannot continue across that graphics-mode transition.
What to check
- Identify whether a local display change, GPU driver reset, resolution switch, or monitor reconfiguration occurred at the same time.
- Reconnect to the session after the display configuration stabilizes.
- If it repeats, investigate the host graphics driver and console display environment rather than changing shadow permissions.
Microsoft: Remote Desktop Services system error codes
Microsoft: Shadow a Terminal Server session
Microsoft: qwinsta / query session
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