Visual Studio：Xamarin - 启动 Android 模拟器时出错

Question

Problem encountered on https://do.net.microsoft.com/learn/xamarin/hello-world-tutorial/devicesetup

Operating System: Windows 10 Pro

Using the Hello World xamarin example in Visual Studio - I'm unable to start the Android Emulator.

When I click on the Run button in the Android Device Manager - the error appears immediately (See attached)

Error-AndroidDeviceManager (Emulator including Google Play/Google API)

Emulator error

Device error: WARNING: unexpected '-prop' value ('monodroid.avdname=pixel_2_pie_9_0_-_api_28'), only 'qemu.' properties are supported WARNING: unexpected '-prop' value ('emu.uuid=4b63b139-cc77-4b66-9200-0d25f8fc545e'), only 'qemu.' properties are supported

Same Error when Emulator is not using Google Play/Google API

Same Error when Emulator is not using Google Play/Google API

Windows Specifications Edition: Windows 10 Pro Version: 1909

Processor AMD Ryzen 9

Task Manager: Performance: Virtualization is Enabled

cmd - systeminfo: Hyper-V Requirements: VM Monitor Mode Extensions: Yes Virtualization Enabled In Firmware: Yes Second Level Address Translation: Yes Data Execution Prevention Available: Yes

Visual Studio 2019

Windows Features On/Off (see attached - shows Hyper V / Virtualization enabled as per documentation): WindowsFeatures

I tried this way too - adding the Virtual Machine Platform - same error

Android SDK Settings

Android SDK Version:

Could the issue be related to the Android SDK Tools - only showing Android SDK Command-line Tools versions 1.0 to 2.1? Could the issue be related to Android Repository perhaps missing on the bottom right hand side?

I've now also included the Android SDK Repository under the tools - but this is still not coming through:

Answer 1

Problem encountered on https://dotnet.microsoft.com/learn/xamarin/hello-world-tutorial/devicesetup

Operating System: Windows 10 Pro

Using the Hello World xamarin example in Visual Studio - I'm unable to start the Android Emulator.

When I click on the Run button in the Android Device Manager - the error appears immediately (See attached)

Error-AndroidDeviceManager (Emulator including Google Play/Google API)

Emulator error

Device error: WARNING: unexpected '-prop' value ('monodroid.avdname=pixel_2_pie_9_0_-_api_28'), only 'qemu.' properties are supported WARNING: unexpected '-prop' value ('emu.uuid=4b63b139-cc77-4b66-9200-0d25f8fc545e'), only 'qemu.' properties are supported

Same Error when Emulator is not using Google Play/Google API

Same Error when Emulator is not using Google Play/Google API

Windows Specifications Edition: Windows 10 Pro Version: 1909

Processor AMD Ryzen 9

Task Manager: Performance: Virtualization is Enabled

cmd - systeminfo: Hyper-V Requirements: VM Monitor Mode Extensions: Yes Virtualization Enabled In Firmware: Yes Second Level Address Translation: Yes Data Execution Prevention Available: Yes

Visual Studio 2019

Windows Features On/Off (see attached - shows Hyper V / Virtualization enabled as per documentation): WindowsFeatures

I tried this way too - adding the Virtual Machine Platform - same error

Android SDK Settings

Android SDK Version:

Could the issue be related to the Android SDK Tools - only showing Android SDK Command-line Tools versions 1.0 to 2.1? Could the issue be related to Android Repository perhaps missing on the bottom right hand side?

I've now also included the Android SDK Repository under the tools - but this is still not coming through:

Answer 2

Problem encountered on https://dotnet.microsoft.com/learn/xamarin/hello-world-tutorial/devicesetup

Operating System: Windows 10 Pro

Using the Hello World xamarin example in Visual Studio - I'm unable to start the Android Emulator.

When I click on the Run button in the Android Device Manager - the error appears immediately (See attached)

Error-AndroidDeviceManager (Emulator including Google Play/Google API)

Emulator error

Device error: WARNING: unexpected '-prop' value ('monodroid.avdname=pixel_2_pie_9_0_-_api_28'), only 'qemu.' properties are supported WARNING: unexpected '-prop' value ('emu.uuid=4b63b139-cc77-4b66-9200-0d25f8fc545e'), only 'qemu.' properties are supported

Same Error when Emulator is not using Google Play/Google API

Same Error when Emulator is not using Google Play/Google API

Windows Specifications Edition: Windows 10 Pro Version: 1909

Processor AMD Ryzen 9

Task Manager: Performance: Virtualization is Enabled

cmd - systeminfo: Hyper-V Requirements: VM Monitor Mode Extensions: Yes Virtualization Enabled In Firmware: Yes Second Level Address Translation: Yes Data Execution Prevention Available: Yes

Visual Studio 2019

Windows Features On/Off (see attached - shows Hyper V / Virtualization enabled as per documentation): WindowsFeatures

I tried this way too - adding the Virtual Machine Platform - same error

Android SDK Settings

Android SDK Version:

Could the issue be related to the Android SDK Tools - only showing Android SDK Command-line Tools versions 1.0 to 2.1? Could the issue be related to Android Repository perhaps missing on the bottom right hand side?

I've now also included the Android SDK Repository under the tools - but this is still not coming through:

Answer 3

Problem encountered on https://dotnet.microsoft.com/learn/xamarin/hello-world-tutorial/devicesetup

Operating System: Windows 10 Pro

Using the Hello World xamarin example in Visual Studio - I'm unable to start the Android Emulator.

When I click on the Run button in the Android Device Manager - the error appears immediately (See attached)

Error-AndroidDeviceManager (Emulator including Google Play/Google API)

Emulator error

Device error: WARNING: unexpected '-prop' value ('monodroid.avdname=pixel_2_pie_9_0_-_api_28'), only 'qemu.' properties are supported WARNING: unexpected '-prop' value ('emu.uuid=4b63b139-cc77-4b66-9200-0d25f8fc545e'), only 'qemu.' properties are supported

Same Error when Emulator is not using Google Play/Google API

Same Error when Emulator is not using Google Play/Google API

Windows Specifications Edition: Windows 10 Pro Version: 1909

Processor AMD Ryzen 9

Task Manager: Performance: Virtualization is Enabled

cmd - systeminfo: Hyper-V Requirements: VM Monitor Mode Extensions: Yes Virtualization Enabled In Firmware: Yes Second Level Address Translation: Yes Data Execution Prevention Available: Yes

Visual Studio 2019

Windows Features On/Off (see attached - shows Hyper V / Virtualization enabled as per documentation): WindowsFeatures

I tried this way too - adding the Virtual Machine Platform - same error

Android SDK Settings

Android SDK Version:

Could the issue be related to the Android SDK Tools - only showing Android SDK Command-line Tools versions 1.0 to 2.1? Could the issue be related to Android Repository perhaps missing on the bottom right hand side?

I've now also included the Android SDK Repository under the tools - but this is still not coming through:

Answer 4

Problem encountered on https://dotnet.microsoft.com/learn/xamarin/hello-world-tutorial/devicesetup

Operating System: Windows 10 Pro

Using the Hello World xamarin example in Visual Studio - I'm unable to start the Android Emulator.

When I click on the Run button in the Android Device Manager - the error appears immediately (See attached)

Error-AndroidDeviceManager (Emulator including Google Play/Google API)

Emulator error

Device error: WARNING: unexpected '-prop' value ('monodroid.avdname=pixel_2_pie_9_0_-_api_28'), only 'qemu.' properties are supported WARNING: unexpected '-prop' value ('emu.uuid=4b63b139-cc77-4b66-9200-0d25f8fc545e'), only 'qemu.' properties are supported

Same Error when Emulator is not using Google Play/Google API

Same Error when Emulator is not using Google Play/Google API

Windows Specifications Edition: Windows 10 Pro Version: 1909

Processor AMD Ryzen 9

Task Manager: Performance: Virtualization is Enabled

cmd - systeminfo: Hyper-V Requirements: VM Monitor Mode Extensions: Yes Virtualization Enabled In Firmware: Yes Second Level Address Translation: Yes Data Execution Prevention Available: Yes

Visual Studio 2019

Windows Features On/Off (see attached - shows Hyper V / Virtualization enabled as per documentation): WindowsFeatures

I tried this way too - adding the Virtual Machine Platform - same error

Android SDK Settings

Android SDK Version:

Could the issue be related to the Android SDK Tools - only showing Android SDK Command-line Tools versions 1.0 to 2.1? Could the issue be related to Android Repository perhaps missing on the bottom right hand side?

I've now also included the Android SDK Repository under the tools - but this is still not coming through:

Answer 5

Problem encountered on https://dotnet.microsoft.com/learn/xamarin/hello-world-tutorial/devicesetup

Operating System: Windows 10 Pro

Using the Hello World xamarin example in Visual Studio - I'm unable to start the Android Emulator.

When I click on the Run button in the Android Device Manager - the error appears immediately (See attached)

Error-AndroidDeviceManager (Emulator including Google Play/Google API)

Emulator error

Device error: WARNING: unexpected '-prop' value ('monodroid.avdname=pixel_2_pie_9_0_-_api_28'), only 'qemu.' properties are supported WARNING: unexpected '-prop' value ('emu.uuid=4b63b139-cc77-4b66-9200-0d25f8fc545e'), only 'qemu.' properties are supported

Same Error when Emulator is not using Google Play/Google API

Same Error when Emulator is not using Google Play/Google API

Windows Specifications Edition: Windows 10 Pro Version: 1909

Processor AMD Ryzen 9

Task Manager: Performance: Virtualization is Enabled

cmd - systeminfo: Hyper-V Requirements: VM Monitor Mode Extensions: Yes Virtualization Enabled In Firmware: Yes Second Level Address Translation: Yes Data Execution Prevention Available: Yes

Visual Studio 2019

Windows Features On/Off (see attached - shows Hyper V / Virtualization enabled as per documentation): WindowsFeatures

I tried this way too - adding the Virtual Machine Platform - same error

Android SDK Settings

Android SDK Version:

Could the issue be related to the Android SDK Tools - only showing Android SDK Command-line Tools versions 1.0 to 2.1? Could the issue be related to Android Repository perhaps missing on the bottom right hand side?

I've now also included the Android SDK Repository under the tools - but this is still not coming through:

Answer 6

Problem encountered on https://dotnet.microsoft.com/learn/xamarin/hello-world-tutorial/devicesetup

Operating System: Windows 10 Pro

Using the Hello World xamarin example in Visual Studio - I'm unable to start the Android Emulator.

When I click on the Run button in the Android Device Manager - the error appears immediately (See attached)

Error-AndroidDeviceManager (Emulator including Google Play/Google API)

Emulator error

Device error: WARNING: unexpected '-prop' value ('monodroid.avdname=pixel_2_pie_9_0_-_api_28'), only 'qemu.' properties are supported WARNING: unexpected '-prop' value ('emu.uuid=4b63b139-cc77-4b66-9200-0d25f8fc545e'), only 'qemu.' properties are supported

Same Error when Emulator is not using Google Play/Google API

Same Error when Emulator is not using Google Play/Google API

Windows Specifications Edition: Windows 10 Pro Version: 1909

Processor AMD Ryzen 9

Task Manager: Performance: Virtualization is Enabled

cmd - systeminfo: Hyper-V Requirements: VM Monitor Mode Extensions: Yes Virtualization Enabled In Firmware: Yes Second Level Address Translation: Yes Data Execution Prevention Available: Yes

Visual Studio 2019

Windows Features On/Off (see attached - shows Hyper V / Virtualization enabled as per documentation): WindowsFeatures

I tried this way too - adding the Virtual Machine Platform - same error

Android SDK Settings

Android SDK Version:

Could the issue be related to the Android SDK Tools - only showing Android SDK Command-line Tools versions 1.0 to 2.1? Could the issue be related to Android Repository perhaps missing on the bottom right hand side?

I've now also included the Android SDK Repository under the tools - but this is still not coming through:

Answer 7

I had the same issue turns out the issue was that the intel HAXM wasn't installing properly from the SDK manager window. So I downloaded the Installer directly from the repo. and installed it via the exe.

here: https://software.intel.com/en-us/android/articles/intel-hardware-accelerated-execution-manager

Restarted Visual studio. Worked perfectly.

Answer 8

I struggled with this issue for 2 days. I even installed Android Studio and run its own emulator to make sure the issue is not Xamarin. Finally it is solved. In my Dell laptop running Windows 10 with Hyper-V installed, there are two issues causing this:

1. Run Command prompt in Admin mode. type bcdedit . On the last entry all the way down, make sure hypervisorlaunchtype is Off . By default it is set to Auto. To change this setting, type:

bcdedit /set hypervisorlaunchtype off

2. Make sure to run the emulator on the laptop screen . Not on any other monitor. Somehow Android emulator crashed my laptop graphics driver when it is on other monitor.

Answer 9

Go to BIOS and enable Virtualization Technology and of course also make sure the Windows Feature (Hyper-V is installed - all components).

In my case, BIOS was reset when I changed my CPU battery.

Answer 10

This recently happened to me. After some research, I discovered that Microsoft Hyper V was the issue, but the machine I was trying to use it on was Windows 10 Home edition. It had to be Professional, Enterprise, etc. It's not compatible with the version of Windows. Hope this helps.