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: 
Disabling Hyper-V can result in a somehow fcked up configuration of the network profiles or VM Settings. I would recomend either deleting all Network Configurations in Hyper-V and all VMs OR reinstalling Visual Studio.
I got this error once, i just cleaned the xap file and rebuilded it.

1. Build > Clean
2. Build > Rebuild

Good luck! :D