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I'm sorry about the issue. Usually, you would install only one antivirus system as multiple systems can cause conflict.
What's the full error message?
Do you have windows xp, vista, or 7, or 8, 10, or mac computer?
Can we do a remote support session, so I can troubleshoot the issue directly on your computer together with you?
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Thank you. Did this first issue occur before or after installing Windows 10?
Can I connect remotely to your computer, so I can fix the AVG antivirus issue directly and quickly on your computer for you?
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