This page lists known issues, workarounds, and troubleshooting tips for theAndroid Emulator.
If you encounter an issue not listed here or are unable to successfully use aworkaround listed here, please report a bug.
Checking for adequate disk space
To avoid crashes and hangs caused by not having enough free disk space, theemulator checks for sufficient free disk space on startup, and will not startunless at least 2 GB is free. If the emulator fails to start for you, check tosee that you have adequate free disk space.
Antivirus software
Because many security and antivirus software packages work by monitoring everyread and write operation, use of such software can decrease performance of toolslike the Android Emulator.
Android Studio AVD - Emulator: Process finished with exit code 1If this didn't Fix it Follow this Step alsohttps://www.youtube.com/watch?v=feCIB6wdUyY. AVD emulator not working in Android Studio (Could not initialize OpenglES emulation) I have just installed android studio and emulator is not working 3.6.2 Visual Studio Emulator for Android working but not listed in VS ('No devices available'). Sometimes apps Uninstall. Run app from Android Studio not working on device, OK on emulator, Step 1: Restart & update On your phone, open the Google Play Store app Google Play. Tap Menu Menu and then My apps & games. Apps with available You can usually force stop an app through your phone’s Settings app. Settings can vary by phone. 'Emulator can not be opened because of a problem' AVD not working in Android Studio on Mac Yosemite. Run AVD Emulator without Android Studio.
Android studio emulator not working windows 10. Android Emulator Troubleshooting, HAXM, the Intel Android Virtualization Technology is incompatible with Hyper-V. Turn off Hyper-V and give it a go again. Hyper-V will often be installed if you @Chris Dotchin I had the same issue when I upgraded to Windows 10.
Many antivirus packages provide the ability to add specific applications to alist of trusted applications, which enables these applications to operatewithout performance degradation. If you are experiencing poor performance withsaving or loading of AVD snapshots, you may improve this performance by addingthe Android Emulator application as a trusted application in your antivirussoftware.
The performance impact differs between various antivirus software packages. Ifyou have additional antivirus software installed beyond that which is includedwith your operating system, you can run simple tests to determine whichantivirus software has a greater performance effect on emulator load and saveoperations.
Some antivirus software may be incompatible with the Android Emulator.
If you're using Avast software and are having trouble running the AndroidEmulator, try disabling Use nested virtualization when availableand Enable Hardware assisted virtualization in the Avast Troubleshootingsettings. In addition, after Avast hardware virtualization is disabled, ensurethat HAXM is set up properly again with a full re-installation of the latest HAXMfrom the SDK Manager.
HAXM on older, unsupported versions of Mac OS
If you are using Android Emulator on older, unsupported versions of Mac OS X(such as 10.9), then you may need to use an older version of HAXM (6.1.2), too.
Android Emulator runs slowly after an update
A number of external factors can cause the Android Emulator to begin runningslowly after an update. To begin troubleshooting, we recommend thefollowing steps:
- If you are running Android Emulator on Windows, check to see if you haveinstalled Windows UpdatesKB4013429andKB4015217.Some users reported improved Android Emulator performance after uninstallingthese updates. Users also reported improved Emulator performance afterinstalling Windows UpdateKB4015438.
- If you have an Intel GPU (and in particular, the Intel HD 4000), ensure youhave downloaded and installed the latest Intel graphics driver.
- If your machine has both an Intel HD 4000 GPU and a discrete GPU,disable the Intel HD 4000 GPU in Device Manager to ensure you areusing the discrete GPU.
- Try running the emulator using the
-gpu angle,-gpu swiftshader, or-gpu guestmodes. For more information about configuring graphicsacceleration options on the command line, seeConfigure hardware acceleration. - Ensure that your router is not using IPv6 addresses if you do not have anIPv6 connection.
If you are still experiencing problems with the Android Emulator runningslowly, Report a bug, including thenecessary Android Emulator Details so we can investigate.
Windows: Free RAM and commit charge
When the emulator starts, it needs to initialize the Android guest operatingsystem's RAM. On Windows, the emulator asks Windows to account for the fullsize of guest memory at start time, even though during actual operation, thememory may be paged in on demand. The emulator requests the full amount of guestmemory at start time because Windows is conservative in ensuring that there isenough physical RAM and pagefile available to hold the entire potential workingset; this prepares for the worst case, in which all guest memory is touchedquickly, without any opportunity to discard or otherwise free memory.
Sometimes, when the emulator asks Windows to account for this full guest memorysize, the request exceeds the current commit limit, which is the total of theavailable physical RAM and pagefile. In this case, Windows can't guarantee thatthe worst-case working set will fit in either physical RAM or pagefile, and theemulator fails to start.
Emulator Not Working In Android Studio Mac Version
In typical cases, the amount of hard drive space allocated for the pagefile plusphysical RAM is more than enough for most use cases of the emulator. However, ifyou experience failures to start the emulator because of exceeding the commitlimit, we recommend examining the current commit charge, which can be seen inthe Performance tab in the Windows Task Manager. (To open the Task Manager,press Ctrl+Shift+Esc.)
You can lower the likelihood of exceeding the commit limit in various ways:
- Free physical RAM before launching the emulator by closing unused applicationsand files.
- Disable third-party memory management and memory compression utilities. Theseutilities can inefficiently cause an excess commit charge and bring yoursystem closer to the commit limit.
Use a system managed size for the Windows pagefile, which can more flexiblyand dynamically increase the pagefile size (and therefore the commit limit) inresponse to increased demand from the emulator and other applications.
For more information on commit charges and why a flexible setting works best,see this Microsoft article.
This article describes the most common warning messages and issuesthat occur while configuring and running the Android Emulator. Inaddition, it describes solutions for resolving these errors as well asvarious troubleshooting tips to help you diagnose emulator problems.
Deployment issues on Windows
Some error messages may be displayed by the emulator when you deployyour app. The most common errors and solutions are explained here.
Deployment errors
If you see an error about a failure to install the APK on the emulatoror a failure to run the Android Debug Bridge (adb), verify that theAndroid SDK can connect to your emulator. To verify emulatorconnectivity, use the following steps:
Launch the emulator from the Android Device Manager (selectyour virtual device and click Start).
Open a command prompt and go to the folder where adb isinstalled. If the Android SDK is installed at its default location,adb is located atC:Program Files (x86)Androidandroid-sdkplatform-toolsadb.exe;if not, modify this path for the location of the Android SDK on yourcomputer.
Type the following command:
If the emulator is accessible from the Android SDK, the emulatorshould appear in the list of attached devices. For example:
If the emulator does not appear in this list, start the AndroidSDK Manager, apply all updates, then try launching theemulator again.
MMIO access error
If the message An MMIO access error has occurred is displayed,restart the emulator.
Missing Google Play Services
If the virtual device you are running in the emulator does not haveGoogle Play Services or Google Play Store installed, this condition isoften caused by creating a virtual device without including thesepackages. When you create a virtual device (seeManaging Virtual Devices with the Android Device Manager),be sure to select one or both of the following options:
- Google APIs – includes Google Play Services in the virtual device.
- Google Play Store – includes Google Play Store in the virtual device.
For example, this virtual device will include Google Play Services and Google Play Store:
Note
Google Play Store images are available only for some base device types suchas Pixel, Pixel 2, Nexus 5, and Nexus 5X.
Performance issues
Performance issues are typically caused by one of the following problems:
The emulator is running without hardware acceleration.
The virtual device running in the emulator is not using an x86-based system image.
The following sections cover these scenarios in more detail.
Hardware acceleration is not enabled
If hardware acceleration is not enabled, starting a virtual device fromthe Device Manager will produce a dialog with an error messageindicating that the Windows Hypervisor Platform (WHPX) is notconfigured properly:
If this error message is displayed, seeHardware acceleration issues below for steps youcan take to verify and enable hardware acceleration.
Acceleration is enabled but the emulator runs too slowly
A common cause for this problem is not using an x86-based image in yourvirtual device (AVD). When you create a virtual device (seeManaging Virtual Devices with the Android Device Manager),be sure to select an x86-based system image:
Hardware acceleration issues
Whether you are using Hyper-V or HAXM for hardware acceleration, youmay run into configuration problems or conflicts with other software onyour computer. You can verify that hardware acceleration is enabled(and which acceleration method the emulator is using) by opening acommand prompt and entering the following command:
This command assumes that the Android SDK is installed at the defaultlocation of C:Program Files (x86)Androidandroid-sdk; if not,modify the above path for the location of the Android SDK on yourcomputer.
Hardware acceleration not available
If Hyper-V is available, a message like the following example will bereturned from the emulator-check.exe accel command:
If HAXM is available, a message like the following example will bereturned:
If hardware acceleration is not available, a message like the followingexample will be displayed (the emulator looks for HAXM if it is unableto find Hyper-V):
If hardware acceleration is not available, seeAccelerating with Hyper-Vto learn how to enable hardware acceleration on your computer.
Incorrect BIOS settings
If the BIOS has not been configured properly to support hardwareacceleration, a message similar to the following example will bedisplayed when you run the emulator-check.exe accel command:
To correct this problem, reboot into your computer's BIOS and enable thefollowing options:
- Virtualization Technology (may have a different label depending on motherboard manufacturer).
- Hardware Enforced Data Execution Prevention.
If hardware acceleration is enabled and the BIOS is configuredproperly, the emulator should run successfully with hardware acceleration.However, problems may still result due to issues that are specific toHyper-V and HAXM, as explained next.
Hyper-V issues
In some cases, enabling both Hyper-V and Windows HypervisorPlatform in the Turn Windows features on or off dialog may notproperly enable Hyper-V. To verify that Hyper-V is enabled, use thefollowing steps:
Enter powershell in the Windows search box.
Right-click Windows PowerShell in the search results and selectRun as administrator.
In the PowerShell console, enter the following command:
If Hyper-V is not enabled, a message similar to the following example will bedisplayed to indicate that the state of Hyper-V is Disabled:
In the PowerShell console, enter the following command:
If the Hypervisor is not enabled, a message similar to the following example will bedisplayed to indicate that the state of HypervisorPlatform is Disabled:
If Hyper-V and/or HypervisorPlatform are not enabled, use the followingPowerShell commands to enable them:
After these commands complete, reboot.
For more information about enabling Hyper-V (including techniques forenabling Hyper-V using the Deployment Image Servicing and Managementtool), seeInstall Hyper-V.
HAXM issues
HAXM issues are often the result of conflicts with other virtualizationtechnologies, incorrect settings, or an out-of-date HAXM driver.
HAXM process is not running
If HAXM is installed, you can verify that the HAXM process is runningby opening a command prompt and entering the following command:
If the HAXM process is running, you should see output similarto the following result:
If STATE is not set to RUNNING, seeHow to Use the Intel Hardware Accelerated Execution Manager to resolve the problem.
HAXM virtualization conflicts
HAXM can conflict with other technologies that use virtualization,such as Hyper-V, Windows Device Guard, and some antivirus software:
Hyper-V – If you are using a version of Windows before theWindows 10 April 2018 update (build 1803) and Hyper-V is enabled,follow the steps in Disabling Hyper-V so thatHAXM can be enabled.
Device Guard – Device Guard and Credential Guard canprevent Hyper-V from being disabled on Windows machines. To disableDevice Guard and Credential Guard, seeDisabling Device Guard.
Antivirus Software – If you are running antivirus softwarethat uses hardware-assisted virtualization (such as Avast), disableor uninstall this software, reboot, and retry the Androidemulator.
Incorrect BIOS settings
If you are using HAXM on a Windows PC, HAXM will not work unlessvirtualization technology (Intel VT-x) is enabled in the BIOS. If VT-xis disabled, you will get an error similar to the following when youattempt to start the Android Emulator:
This computer meets the requirements for HAXM, but IntelVirtualization Technology (VT-x) is not turned on.
To correct this error, boot the computer into the BIOS, enable bothVT-x and SLAT (Second-Level Address Translation), then restart thecomputer back into Windows.
Disabling Hyper-V
If you are using a version of Windows before the Windows 10April 2018 Update (build 1803) and Hyper-V is enabled, you must disableHyper-V and reboot your computer to install and use HAXM. If youare using Windows 10 April 2018 Update (build 1803) or later, AndroidEmulator version 27.2.7 or later can use Hyper-V (instead of HAXM) forhardware acceleration, so it is not necessary to disable Hyper-V.
You can disable Hyper-V from the Control Panel by following thesesteps:
Enter windows features in the Windowssearch box and select Turn Windows features on or off inthe search results.
Uncheck Hyper-V:
Restart the computer.
Alternately, you can use the following PowerShell command to disablethe Hyper-V Hypervisor:
Disable-WindowsOptionalFeature -Online -FeatureName Microsoft-Hyper-V-Hypervisor
Intel HAXM and Microsoft Hyper-V cannot both be active at the sametime. Unfortunately, there is no way to switch between Hyper-Vand HAXM without restarting your computer.
In some cases, using the above steps will not succeed in disablingHyper-V if Device Guard and Credential Guard are enabled. If you areunable to disable Hyper-V (or it seems to be disabled but HAXMinstallation still fails), use the steps in the next section to disableDevice Guard and Credential Guard.
Disabling Device Guard
Device Guard and Credential Guard can prevent Hyper-V from beingdisabled on Windows machines. This situation is often a problem fordomain-joined machines that are configured and controlled by an owningorganization. On Windows 10, use the following steps to see if DeviceGuard is running:
Enter System info in the Windows search box and selectSystem Information in the search results.
In the System Summary, look to see if Device GuardVirtualization based security is present and is in the Runningstate:
If Device Guard is enabled, use the following steps to disable it:
Ensure that Hyper-V is disabled (under Turn Windows Featureson or off) as described in the previous section.
In the Windows Search Box, enter gpedit.msc and select the Editgroup policy search result. These steps launch the Local GroupPolicy Editor.
In the Local Group Policy Editor, navigate to ComputerConfiguration > Administrative Templates > System > Device Guard:
Change Turn On Virtualization Based Security to Disabled (asshown above) and exit the Local Group Policy Editor.
In the Windows Search Box, enter cmd. When Command Prompt appearsin the search results, right-click Command Prompt and selectRun as Administrator.
Copy and paste the following commands into the command prompt window(if drive Z: is in use, pick an unused drive letter to useinstead):
Restart your computer. On the boot screen, you should see a prompt similar tothe following message:
Do you want to disable Credential Guard?
Press the indicated key to disable Credential Guard as prompted.
After the computer reboots, check again to ensure that Hyper-V isdisabled (as described in the previous steps).
If Hyper-V is still not disabled, the policies of your domain-joinedcomputer may prevent you from disabling Device Guard or CredentialGuard. In this case, you can request an exemption from your domainadministrator to allow you to opt out of Credential Guard. Alternately,you can use a computer that is not domain-joined if you must use HAXM.
Additional troubleshooting tips
The following suggestions are often helpful in diagnosing Androidemulator issues.
Starting the emulator from the command line
If the emulator is not already running, you can start it from thecommand line (rather than from within Visual Studio) to view itsoutput. Typically, Android emulator AVD images are stored at thefollowing location (replace username with your Windows user name):
Emulator Not Working In Android Studio Mac Download
C:Usersusername.androidavd
You can launch the emulator with an AVD image from this location bypassing in the folder name of the AVD. For example, this command launchesan AVD named Pixel_API_27:
This example assumes that the Android SDK is installed at the defaultlocation of C:Program Files (x86)Androidandroid-sdk; if not,modify the above path for the location of the Android SDK on yourcomputer.
When you run this command, it will produce many lines of output whilethe emulator starts up. In particular, lines such as the followingexample will be printed if hardware acceleration is enabled and workingproperly (in this example, HAXM is used for hardware acceleration):
Viewing Device Manager logs
Often you can diagnose emulator problems by viewing the Device Managerlogs. These logs are written to the following location:
C:UsersusernameAppDataLocalXamarinLogs16.0
You can view each DeviceManager.log file by using a texteditor such as Notepad. The following example log entry indicates thatHAXM was not found on the computer:
Deployment issues on macOS
Some error messages may be displayed by the emulator when you deployyour app. The most common errors and solutions are explained below.
Deployment errors
If you see an error about a failure to install the APK on the emulatoror a failure to run the Android Debug Bridge (adb), verify that theAndroid SDK can connect to your emulator. To verify connectivity, usethe following steps:
Launch the emulator from the Android Device Manager (selectyour virtual device and click Start).
Open a command prompt and go to the folder where adb isinstalled. If the Android SDK is installed at its default location,adb is located at~/Library/Developer/Xamarin/android-sdk-macosx/platform-tools/adb;if not, modify this path for the location of the Android SDK on yourcomputer.
Type the following command:
If the emulator is accessible from the Android SDK, the emulatorshould appear in the list of attached devices. For example:
If the emulator does not appear in this list, start the AndroidSDK Manager, apply all updates, then try launching theemulator again.
MMIO access error
If An MMIO access error has occurred is displayed,restart the emulator.
Missing Google Play Services
If the virtual device you are running in the emulator does not haveGoogle Play Services or Google Play Store installed, this condition isusually caused by creating a virtual device without including thesepackages. When you create a virtual device (seeManaging Virtual Devices with the Android Device Manager),be sure to select one or both of the following:
- Google APIs – includes Google Play Services in the virtual device.
- Google Play Store – includes Google Play Store in the virtual device.
For example, this virtual device will include Google Play Services and Google Play Store:
Note
Google Play Store images are available only for some base device types suchas Pixel, Pixel 2, Nexus 5, and Nexus 5X.
Performance issues
Performance issues are typically caused by one of the following problems:
The emulator is running without hardware acceleration.
The virtual device running in the emulator is not using an x86-based system image.
The following sections cover these scenarios in more detail.
Hardware acceleration is not enabled
If hardware acceleration is not enabled, a dialog may pop up with amessage such as device will run unaccelerated when you deploy yourapp to the Android emulator. If you are not certain whether hardwareacceleration is enabled on your computer (or you would like to knowwhich technology is providing the acceleration), seeHardware acceleration issues below for steps you cantake to verify and enable hardware acceleration.
Acceleration is enabled but the emulator runs too slowly
A common cause for this problem is not using an x86-based image in yourvirtual device. When you create virtual device (seeManaging Virtual Devices with the Android Device Manager),be sure to select an x86-based system image:
Hardware acceleration issues
Whether you are using the Hypervisor Framework or HAXM for hardwareacceleration of the emulator, you may run into problems caused byinstallation issues or an out-of-date version of macOS. The followingsections can help you resolve this issue.
Hypervisor Framework issues
If you are using macOS 10.10 or later on a newer Mac, the Androidemulator will automatically use the Hypervisor Framework for hardwareacceleration. However, some older Macs or Macs running a version ofmacOS earlier than 10.10 may not provide Hypervisor Framework support.
To determine whether or not your Mac supports the Hypervisor Framework,open a Terminal and enter the following command:
If your Mac supports the Hypervisor Framework, the above command willreturn the following result:
If the Hypervisor Framework is not available on your Mac, you canfollow the steps in Accelerating with HAXMto use HAXM for acceleration instead.
HAXM issues
If the Android Emulator does not start properly, this problem is oftencaused by problems with HAXM. HAXM issues are often the result ofconflicts with other virtualization technologies, incorrect settings,or an out-of-date HAXM driver. Try reinstalling the HAXM driver, usingthe steps detailed inInstalling HAXM.
Additional troubleshooting tips
The following suggestions are often helpful in diagnosing Androidemulator issues.
Android Studio Emulator Won't Start
Starting the emulator from the command line
If the emulator is not already running, you can start it from thecommand line (rather than from within Visual Studio for Mac) to viewits output. Typically, Android emulator AVD images are stored at thefollowing location:
~/.android/avd
You can launch the emulator with an AVD image from this location bypassing in the folder name of the AVD. For example, this commandlaunches an AVD named Pixel_2_API_28:
If the Android SDK is installed at its default location, the emulatoris located in the~/Library/Developer/Xamarin/android-sdk-macosx/emulator directory;if not, modify this path for the location of the Android SDK on yourMac.
When you run this command, it will produce many lines of output whilethe emulator starts up. In particular, lines such as the followingexample will be printed if hardware acceleration is enabled and workingproperly (in this example, Hypervisor Framework is used for hardwareacceleration):
Viewing Device Manager logs
Often you can diagnose emulator problems by viewing the Device Managerlogs. These logs are written to the following location:
~/Library/Logs/XamarinDeviceManager
You can view each Android Devices.log file by double-clicking it toopen it in the Console app. The following example log entry indicatesthat HAXM was not found: