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Having trouble with your Bitdefender Antivirus

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Q1: Please Choose Your Bitdefender Product:

Can't install antivirus

Bitdefender is among the most popular antivirus solutions. It is the best antivirus solution for Windows 10 and 11 users. However, sometimes users report an installation issue on their computer. Usually, this conflict occurs due to the previous version of the software on your computer. There are many solutions to manage it. Most users aren’t aware of the common issues and their solutions. Here is a list of the common causes and their solutions.


  1. Older version of antivirus: Usually, the installation error results due to a conflict with the previous version of the software. 
  2. Third-party antivirus: Other antiviruses may not be compatible with Bitdefender, and the installation issue may occur. 
  3. Conflicting programs: An installed older version of antivirus software may be causing the issue. 
  4. Inadequate storage: If your computer doesn’t meet the minimum requirements for installation, the software won’t be installed. 

Solution 1: Disable the Windows Defender Real-Time Protection 

  1. Go to the search bar, type Windows Security, and click on the appropriate result.
  2. Tap on Virus and Threat Protection.
  3. Scroll through under Virus and Threat Protection and click Manage Settings.
  4. Disable Real-time protection.
  5. Try to install Windows Defender again.

Solution 2: Unblock the Bitdefender Installer

  1. Confirm that you have the latest version of the Bitdefender installer. 
  2. Open the Bitdefender installation file and select Properties. 
  3. Then, go to the Advanced button and click the Unblock option. 
  4. After That, click on Apply and then click OK. 
  5. Again run the Bitdefender installer.

Solution 3: Repair Bitdefender Client

  1. Close Bitdefender if it’s open. 
  2. Hold Windows and R keys together to launch the Run box, type Control Panel, and hit enter. 
  3. Then, move to Programs > Programs and Features. 
  4. After That, pick Bitdefender from the programs list and tap the Uninstall button. 
  5. Go with the displayed instructions and choose Repair. 
  6. Again open Bitdefender and install the update.
Antivirus Support

Frequently Asked Questions (FAQ's)

Follow the instructions to enable Bitdefender antivirus: 

  1. Open the Bitdefender Security program from the Bitdefender desktop icon. 
  2. Select the protection option from the left side of the screen.
  3. Then, go to the Antivirus panel and tap on Open.
  4. Go to the Advanced tab and check if the Bitdefender Shield is enabled (Blue switch is on).
  5. If it's disabled, turn it on.

Yes, Bitdefender has been at the top of the list of antivirus software. It includes signature-based threat detection and can detect malware and prevent your System from any potential threats.

Once you install antivirus software like Bitdefender, your System might run slow, which is normal up to an extent. However, a significant decline in the System's activity may indicate that you need to increase the speed of your System.

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