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{A7A9D7E7-E0C0-4202-9F13-6A06BD073CDA} is a browser extension unique ID.
A browser extension is a computer program that extends the functionality of a web browser in some way.
We suggest you to remove {A7A9D7E7-E0C0-4202-9F13-6A06BD073CDA} extension from your browser as soon as possible.
Also, you should delete files and registry keys, created by {A7A9D7E7-E0C0-4202-9F13-6A06BD073CDA}.
{A7A9D7E7-E0C0-4202-9F13-6A06BD073CDA} is related to: Adware, TOPARCADEHITS.DLL.