Hi all, I have upgraded my computer to Windows 7 Home Premium from Windows Vista. I have installed the Mozilla Thunderbird to my computer and when I try to open the Mozilla Thunderbird then it shows me the message which says "Do you want the following program to allow changes to this computer?" It was not the problem when I was having the windows Vista installed on my computer then why it is happening to me. I am not able to understand the reason behind this. Can you tell me that what is the problem with that and how can this be solved? I will be thankful for all the replies.
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