Question: I am developing window phone 8 apps since November 2013 on window 8 pro. I am using window phone 8 emulator to test my apps. But from last one week every time I want to start emulator. the emulator takes 3, 4 minutes to show "**The Window Phone os is Starting**".  

 when I end the emulator there is pop up appear says "**There is App deployment errors**".
in out put window i saw `invalid pointer error`. I stuck here searching Google a lot. but can't find an answer i need. 

### What Have I tried

* disable hyper-V from windows feature, restart computer and Enable Hyper-V. But not worked.
* Change no of CPU from 2 to 1. this also doesn't work.
* Disable my antivirus so that it can't stop Hyper-V to create VM. and start WP8 emulator

I am able to create VM. but unable to start window phone 8 emulator. I found only a few solutions out there. I tried everything I found But doesn't seems to solve problem. Anyone here for any suggestion what should I do to work my emulator again. Also I can't find why this error occur.
Update:-
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 anyone please answer or please suggest me what to do. should I update my sdk to 8.1? than this problem will resolved or not?

Answer: 
Go to Control Panel -> Network and Internet -> Network and Sharing center -> Change adapter settings. You should see a vEthernet(Internal Ethernet Port Windows Phone Emulator Internal Switch). See that this is enabled. That should do the trick.
if you are deploying on device and you have old version of your app which you have deployed previously then you must remove that first,then deploy new one it will not cause you "App deployment errors" and if emulator is taking time its normal as sometimes it happens, you can just close it and again have a try.