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Temporarily disable Bitdefender protection: https://www.bitdefender.com/consumer/support/answer/28557/
Check if this resolves your issue.
If it does not, then the issue is not on Bitdefender's end. If it does resolve your query, kindly contact Bitdefender support by visiting https://www.bitdefender.com/consumer/support/. Based on your selected product and the type of issue you're facing, you can get in touch with a support representative through email, chat, or a phone call.
If you choose email, you will receive a ticket number on your registered email. The support team will reply within the next 24-48 hours, excluding weekends.
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Bitdefender Ultimate Security Plus (user)