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[GH-ISSUE #1192] [BUG]When the remote client locks the system or enters the password input screen, the remote control screen displays black #876

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opened 2026-02-27 15:52:12 +03:00 by kerem · 6 comments

kerem commented

2026-02-27 15:52:12 +03:00

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Originally created by @AlphaCharry on GitHub (Jul 7, 2023).
Original GitHub issue: https://github.com/quasar/Quasar/issues/1192

Quasar version

1.4.0

Server installed .NET version

.NET 4.5.2

Server operating system

Windows 10/Server 2019/2016

Client installed .NET version

.NET 4.5.2

Client operating system

Windows 10/Server 2019/2016

Build configuration

Release

Describe the bug

**When the remote host is in the state of user input password, or the system such as WindowsServer 2019 is in the lock state, it cannot display the remote desktop properly！！！**However, you must manually enter the password on the remote host to enter the desktop

How to reproduce

You can use WindowsServer 2008 2019 2022. After RDP leaves, you cannot enter it again, and the remote desktop displays a black background
Common Windows11 When you enter the startup password in Windows10, the remote desktop cannot be displayed normally and turns black

Expected behavior

Should display normally but cant

Actual behavior

The remote desktop is all black

Additional context

No response

Originally created by @AlphaCharry on GitHub (Jul 7, 2023). Original GitHub issue: https://github.com/quasar/Quasar/issues/1192 ### Quasar version 1.4.0 ### Server installed .NET version .NET 4.5.2 ### Server operating system Windows 10/Server 2019/2016 ### Client installed .NET version .NET 4.5.2 ### Client operating system Windows 10/Server 2019/2016 ### Build configuration Release ### Describe the bug ![48c450eaf14fd7d35d159730f03dce8](https://github.com/quasar/Quasar/assets/38164385/88759e7a-c291-4fd3-b401-9275e7496de5) **When the remote host is in the state of user input password, or the system such as WindowsServer 2019 is in the lock state, it cannot display the remote desktop properly！！！**However, you must manually enter the password on the remote host to enter the desktop ### How to reproduce 1. You can use WindowsServer 2008 2019 2022. After RDP leaves, you cannot enter it again, and the remote desktop displays a black background 3. Common Windows11 When you enter the startup password in Windows10, the remote desktop cannot be displayed normally and turns black ### Expected behavior Should display normally but cant ### Actual behavior The remote desktop is all black ### Additional context _No response_

kerem

2026-02-27 15:52:12 +03:00

closed this issue
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kerem commented

2026-02-27 15:52:13 +03:00

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@MaxXor commented on GitHub (Jul 7, 2023):

Now I understand, thank you. Unfortunately it's a known issue and not fixed yet:

@MaxXor commented on GitHub (Jul 7, 2023): Now I understand, thank you. Unfortunately it's a known issue and not fixed yet:

kerem commented

2026-02-27 15:52:13 +03:00

Author

Owner

@MaxXor commented on GitHub (Jul 7, 2023):

https://github.com/quasar/Quasar/issues/733

@MaxXor commented on GitHub (Jul 7, 2023): https://github.com/quasar/Quasar/issues/733

kerem commented

2026-02-27 15:52:13 +03:00

Author

Owner

@AlphaCharry commented on GitHub (Jul 7, 2023):

#733

UAC？

@AlphaCharry commented on GitHub (Jul 7, 2023): > #733 UAC？

kerem commented

2026-02-27 15:52:13 +03:00

Author

Owner

@MaxXor commented on GitHub (Jul 7, 2023):

User Access Control, Quasar Remote Desktop works currently only when the user screen is not locked and not password/UAC prompts are active.

@MaxXor commented on GitHub (Jul 7, 2023): User Access Control, Quasar Remote Desktop works currently only when the user screen is not locked and not password/UAC prompts are active.

kerem commented

2026-02-27 15:52:13 +03:00

Author

Owner

@AlphaCharry commented on GitHub (Jul 7, 2023):

What are the solutions and ideas so far

User Access Control, Quasar Remote Desktop works currently only when the user screen is not locked and not password/UAC prompts are active.

@AlphaCharry commented on GitHub (Jul 7, 2023): What are the solutions and ideas so far > User Access Control, Quasar Remote Desktop works currently only when the user screen is not locked and not password/UAC prompts are active.

kerem commented

2026-02-27 15:52:13 +03:00

Author

Owner

@MaxXor commented on GitHub (Jul 7, 2023):

-----> https://github.com/quasar/Quasar/issues/733

@MaxXor commented on GitHub (Jul 7, 2023): -----> https://github.com/quasar/Quasar/issues/733