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Phone contact lost when synchronizing with computer

I have lost my address book contacts when synchronizing my pc with my phone

When synchronizing your mobile phone with a computer all your contacts are lost.

Try this solution :

Do a search for

If you find this file another file called, should be in the same folder , this will be the empty one. Drag the file to the desktop.

Now try re-opening your Address Book

Drag this one from the folder onto desktop
Now reopen AddressBook