[open]bitdefender Total Security Isn't Updating

Well this isn't the first time. I've had multiple versions of bitdefender (antivirus, internet security, etc.) yet every time, at a certain point I get the "Unknown Error" update error, and the software just stops updating. And so I have to once again reinstall. What is happening? How do I counter this? Its really starting to bug me right now. If anyone knows how to stop this, please help.

Thanks for your advice in advance.

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