Hello! My name is*****
I am sorry for what happened, but please note that you cannot lose Skype contacts when upgrading Skype since the contacts are tied to your Skype account, and not to the Skype installation on your computer.
For that reason, please check with on-line version of Skype to see if your contacts are there. Click on the link below and sign in with your Skype account.
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Let me know,IT Miro
Let me know if you were able to receive my messages.