App not run in visual studio emulator for android in visual studio 2015

Question

I create blank xamarin android project without add any code when i debug this project debugging without problem but when i run app with visual studio emulator for android emulator is running but not starting my app and deploy failed and don't show me error

why ? please help me

it can be due to many reasons, it there any error message, warning you can put it here for us in order to help you — Marzouk, Sep 14 '15 at 09:03
Possible duplicate of [Visual Studio 2015 Xamarin deploy fail without any error message](http://stackoverflow.com/questions/31691644/visual-studio-2015-xamarin-deploy-fail-without-any-error-message) — Ali Seyedi, Jul 10 '16 at 05:35
Do you have Windows 8 or higher? As far a i know i wont run under Windows 7. — Seb, Nov 10 '16 at 08:24

score 49 · Accepted Answer · edited Nov 03 '17 at 06:55

49

I had the same issue. VS 2015 can launch the VS emulator but can't deploy the app.

I was able to solve the issue like this:

Launch the emulator (F5 in VS, then cancel the deployment using the Build/Cancel menu)
Click on the chevron icon (») in the toolbar to the right of the emulator
Select the Network tab
Locate the preferred network ip address
Back in VS, click on the Open Adb Command Prompt toolbar button
Type adb connect [the emulator ip address]
Press F5 again in VS

Looks like a VS bug to me.

edited Nov 03 '17 at 06:55

Saeb Amini

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answered Sep 14 '15 at 11:48

CSharpRocks

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Exactly what I needed! – Chris Swain Oct 16 '15 at 17:43
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Spent like a whole day trying to figure this one out. You're solution did it. – jdehlin Jul 11 '16 at 04:32
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Thx for the answer. Worked for me! – Kenci Nov 27 '16 at 21:59
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It also worked for me! Good Job! but need to do it in every deployment. – Json May 15 '17 at 14:54
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I cannot found chevron icon too. – Hareen Laks Jul 27 '17 at 03:18
Thanks for that! Got this issue when reinstalling all the xamarin stuff on a new laptop. Eventhough it's working well with same versions on old laptop. I am still looking for the root cause and permanent fix. Still valid with VS 2017 15.8.8 – TaiT's Nov 05 '18 at 17:15

score 13 · Answer 2 · edited Jun 16 '16 at 15:35

I had the same issue. It turned out the root cause was that the VS Emulator couldn't find adb.exe.

When that happens it won't connect to the emulator unless you do the manual connection following the steps CSharpRocks gives. The emulator also won't be listed under "adb devices".

The fix for me was to reinstall the Android SDK, using the Windows EXE based installer (not the zip installer). The EXE installer sets the HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Android SDK Tools key, Path value, in the registry, pointing to the Android SDK root directory.

The VS Emulator uses that registry setting (or the Android Studio install registry setting) to find the SDK, assuming you didn't install the Android SDK with Visual Studio itself. With that, it should be able to find adb.exe and work.

This was the same method that suggested by Microsoft [(This is the link)](https://msdn.microsoft.com/en-us/library/mt228282.aspx#Anchor_8) and it worked for me and solved the issue permanently. — Json, May 15 '17 at 15:12

score 8 · Answer 3 · edited May 23 '17 at 10:31

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Have a look here:

Xamarin Forms Android App Crashes Running Debug with VS Android Emulator

Start the Hyper-V manager
Select the emulator you are trying to use
Right-click, hit settings
Click processor
Click Compatibility
Set checkbox “Migrate to a physical computer with a different processor version”

edited May 23 '17 at 10:31

Community

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answered May 13 '16 at 17:41

Zverev Evgeniy

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This was the answer that worked for me. Good effort. – Jools Jun 29 '17 at 21:46

score 4 · Answer 4 · answered May 06 '16 at 22:39

I'm having a very similar issue. I have found two different kind-of-work-arounds, but have not yet figured out a full solution.

Start the emulator before trying to deploy to it

Launch the Visual Studio Emulator for Android application from the start menu.
Launch one of the available emulators via the green arrow
Attempt to again launch your application from visual studio, selecting the VS Emulator N-inch... emulator from the drop down menu

For me for some reason the app still doesn't "launch" on the emulator, although it is installed. So I have to open the application menu and select my app. Additionally it will usually crash the first several times I try to open it, but eventually displays my single default label, Welcome to Xamarin Forms!.

Run the application in `Ad-Hoc` mode

Before running the application, change the solution configuration (from the top toolbar next to the green "run" button) to Ad-Hoc.

The problem with both of these methods though is that I'm still not able to actually debug an application. I can run it, but my breakpoints are ignored and I think that will make finding bugs difficult once I actually start to write a real application.

I hope to update this answer once I figure out an actual solution.

Thanks so much - Starting the emulator before trying to deploy to it fixed it for me... — James, May 21 '16 at 21:37

score 3 · Answer 5 · answered Nov 01 '16 at 01:55

I had the same problem yesterday. The problem appeared (probably) because I tried to start development after a long break. I updated VS and everything, but faced many issues.

Eventually you need to start fresh

Make sure SDK for emulator points to the right place (HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Android SDK Tools)
Run Visual Studio with Administrator privileges
Go to Hyper-V Manager and delete ALL Virtual Switches - let the system recreate them when needed. It will do it properly
Delete all existing emulators and recreate them in Visual Studio. I even found a comment to name them without spaces - not sure if it is needed, but wouldn't hurt.

Doing all this helped me. But I was on the verge of reinstalling Windows 10 clean. I think lots of things and configuration changed and are no longer compatible.

score 0 · Answer 6 · answered Oct 12 '16 at 01:50

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Try it enabling Hyper-V and using a Visual Studio Emulator from android; that worked for me after a lot of attempts and research

answered Oct 12 '16 at 01:50

Carlos Valdez

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score 0 · Answer 7 · answered Dec 08 '16 at 16:21

I had the same issue but in my case it was not the registry. After doing a release build, I deployed the app to the emulator device in release mode which pushes the app to the device and then effectively "disconnects". This leaves a version of the app on the device which seems to block further attempts at debugging or deploying.

I solved it by starting the emulator, going to "settings -> apps" and manually uninstalling my app. Then the next debug build & deploy worked again.

You could probably also manually start the emulator and say "wipe device" option so it starts fresh.

score 0 · Answer 8 · edited Jul 18 '18 at 21:52

In VS2017, on a Windows10 machine, all I had to do to get the app to show up was turn off Mobile Data. (swipe down or use settings, then click Mobile Data and confirm to turn it off).

After I turned it back on, I could access the app. Before doing this, it always seemed that the emulator ran, but wouldn't run the app.

... no idea why this worked, but I'm posting it here in case it helps someone.

During my troubleshooting process, I also looked at these articles:

score 0 · Answer 9 · edited Jul 18 '20 at 07:21

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Install apache in VS 2015 here.
Visual studio requires apache to develop android apps.
You also may want to look at some other suggestions:
notshowing, troubleshooting

edited Jul 18 '20 at 07:21

Yunnosch

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answered Jul 07 '20 at 19:37

user2616989

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score -1 · Answer 10 · answered Aug 27 '16 at 08:10

I had such issues before with the android SDK emulator, now I'm using Genymotion emulator instead of it, it is more light and faster and will be detected automatically by you VS once launched.

you can download the free version from here : https://www.genymotion.com/

and also you can download any device emulator.

App not run in visual studio emulator for android in visual studio 2015

10 Answers10

Start the emulator before trying to deploy to it

Run the application in `Ad-Hoc` mode

Linked

App not run in visual studio emulator for android in visual studio 2015

10 Answers10

Start the emulator before trying to deploy to it

Run the application in Ad-Hoc mode

Linked

Run the application in `Ad-Hoc` mode