This section of the website contains posts about the mobile operating system Microsoft Windows Phone 8.0
Be sure that you have exported the certificate as DER-coded-binary X.509 (.cer).
Send the Certificate file “.cer” via e-mail to an account configured on your Microsoft Windows Phone device.
Sync the Mail Box and tap on the attachment file to install the certificate.
Reboot your device.
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When you try to deploy a Windows Phone Project to a physical Windows Phone device show you the following error message:
0×89731811
Solution 1:
Launch the Zune software and check that the phone is connected to your pc.
Solution 2:
Deploy to Windows Phone Emulator
In Visual Studio, on the Standard toolbar, click Windows Phone Emulator.
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