这个错误非常普遍，这种症状可能是由于一百万个完全不同的问题中的任何一个造成的。 你要做的是找到更多关于正在发生的事情的信息，这样你就不会看起来像一只瞎鸡在啄食令人作呕的石头。 因此，让我们得到调试步骤:

first thing is to find the logs of Android studio. In doubt, stackoverflow already has a section to help you How to find the logs on android studio?. The text file should be named: "idea.log". You can open it with notepad, but only open it after android studio is closed (in windows 10). There will be a lot of events inside. Search by "manager.EmulatorProcessHandler" and the last date that you had the error. A good trick to facilitate your life, after having found the log file, is to close Android studio: delete the log file; reopen android studio and retry to open the emulator. The log file will be recreated with a lot less history and so it will be so much easier to search. In my case, i found: manager.EmulatorProcessHandler - Emulator: emulator: ERROR: Another emulator instance is running. Please close it or run all emulators with -read-only flag.. Given that, it is easy to solve. I just had to open a process manager and terminate the emu process that didn't correctly close for some unknown reason. Of course, in our case the log will be completely different. But now you have a clue of the hidden criminal.

这对我很管用。您必须将android studio更新到最新版本，然后按照以下步骤更新sdk工具:

工具-> SDK管理器 选择Android SDK SDK工具标签 检查以更新可用选项。 按ok键 之后，这个过程将花费你几分钟，完成后，一切都会正常工作。

对我来说(我在网上看到其他人也遇到了这种情况)，这是因为我在后台运行Riot的Vanguard软件。这不足以杀死托盘中的进程(我在Windows上)，我必须将其设置为启动时不运行，然后重新启动我的计算机。之后，我就可以正常启动我的虚拟设备了。

对我来说，这是我电脑剩余空间的问题，删除不必要的文件解决了这个问题。原因是不同的情况下，你应该看到事件选项卡，其中详细的事件日志显示。

总结一下:

Install and reinstall HAXM 7.5.6 (only available version) under 'Android SDK' settings. Try downloading it manually, even other versions (they don't work with Android SDK), installing it from the Android/Sdk folder, etc. sc query intelhaxm in cmd should show if it is running correctly. Virtualization is enabled in your BIOS and has been tested Made sure the PATH variables are correct (ANDROID_HOME / ANDROID_SDK_ROOT) but NOT (ANDROID_SDK_HOME) to the folder in your settings per Here. Otherwise, you will see EVENTS on the Android Studio splash screen. Try unchecking / rechecking Launch in a tool window in Emulator settings (and even Enable Device Frame in AVD settings) Try rebuilding in several different combinations of android, different phones, etc (but with same levels and packages ... 30 for example) Try Rebooting in several different configurations Make sure all SDK Tools are up-to-date, and even try a fresh install of Android Studio. However, tried removing all of them, and adding them back. Check your space, try to have 25GB maybe or more free Check for Virtual Box, Antivirus Software, etc. Open Android Studio with Administrator privileges

运行在双显示器/坞站上?

A)在不插任何插头的情况下运行模拟器，然后插回显示器!(我知道很奇怪)……或者更好的是…… B)创建一个新的硬件配置文件，它将使您能够将图形:自动更改为软件。

这个错误非常普遍，这种症状可能是由于一百万个完全不同的问题中的任何一个造成的。 你要做的是找到更多关于正在发生的事情的信息，这样你就不会看起来像一只瞎鸡在啄食令人作呕的石头。 因此，让我们得到调试步骤:

first thing is to find the logs of Android studio. In doubt, stackoverflow already has a section to help you How to find the logs on android studio?. The text file should be named: "idea.log". You can open it with notepad, but only open it after android studio is closed (in windows 10). There will be a lot of events inside. Search by "manager.EmulatorProcessHandler" and the last date that you had the error. A good trick to facilitate your life, after having found the log file, is to close Android studio: delete the log file; reopen android studio and retry to open the emulator. The log file will be recreated with a lot less history and so it will be so much easier to search. In my case, i found: manager.EmulatorProcessHandler - Emulator: emulator: ERROR: Another emulator instance is running. Please close it or run all emulators with -read-only flag.. Given that, it is easy to solve. I just had to open a process manager and terminate the emu process that didn't correctly close for some unknown reason. Of course, in our case the log will be completely different. But now you have a clue of the hidden criminal.