Xamarin "Waiting for runtime checks to complete" and VS Emulator

You need restart ADB service. Visual Studio-Service-Android-restart adb service. It helped for me.

In Visual Studio from the Menu Bar: Tools -> Android -> Restart Adb Server

I managed to fix this error by doing following the below steps:

1. Build and Run the application .
2. The build will stall with at "Waiting for Runtime Checks".
3. In the emulator click the >> arrows in the tool-bar to the right.
4. Make a note of the IP address for the Windows Phone Emulator Internal Switch.
5. Back in VS. From the menu select Tools → Android → Android ADB Command Prompt
6. Type adb connect [IP_FROM_STEP_#4].
7. The build should continue.

You should only need to do this each time the emulator is started. It didn't solve the issue of VS not connecting automatically, but I find it easy enough to do in order to carry on.

As a side note, if the applications runs and immediately quits, then do the following:

1. Stop the emulator.
2. Open the Hyper-V Manager application.
3. Right-click the emulator and select "Settings".
4. Expand the "Processor" node and select "Compatibility".
5. Tick "Migrate to physical computer with different processor version".

---

After looking at the link provided by @masound I found that the registry key was missing. So, I did the following:

• Added the "Android SDK Tools" key to HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node.
• Added a string value with the name Path and value C:\Program Files (x86)\Android\android-sdk.

I was having the same issue. Spent hours trying to fix it. Tried all the answers above to no avail. Opened Android Device Manager and did a Factory Reset on all of my emulators. It fixed the problem.