If you’re running one of 2012, 2013, 2014 or 2015 versions of Bit defender on your computer and you decide to upgrade your Operating System to Windows 10, you will be able to install the latest compatible Bit defender product.

The applications installed on your previous Operating System are automatically migrated 3 hours after Windows 10 is installed on your system, provided that they are compatible.
Should you decide you don't want to wait this period of time, you can manually install the Bitdefender 2015 Windows 10 compatible version by accessing the upgrade.exe file from this location: C:\\\\\\\\Program Files\\\\\\\\Bitdefender\\\\\\\\Bitdefender 2015
Alternatively, you can perform a clean reinstall of your Bitdefender product as follows:
1. Use our uninstall tool in order to uninstall/delete any previous Bit defender related files
Access the link and when the window with the Bit defender file appears, please choose the "Save to disk" option. Save the tool on the PC, run it, restart the computer.
2. Install Bit defender using the latest installation kit available for download. Please note that you need to download (save) the installation kit prior to running it.
The Bit defender Antivirus 2015 installation kit can be downloaded from one of the 2 locations 32bit, 64bit.

What to do if I lose the internet connection after upgrading to Windows 10
If you are having issues with the internet connection after you upgraded your OS to Windows 10, please set the Bit defender Firewall correctly, by following these steps:
1. Open theBitdefender program
2. Click on the Protection module and then click on the Firewall feature
3. Make sure the Firewall is turned ON and then go to the Adapters tab and perform the following changes:
at "Network Type" select "Home/Office"
in "Stealth Mode" select "Off"
in "Generic" select "On"
Now close the Bit defender window and restart your system.

Bit defender Error Codes And Messages +1-855-205-4069 for Antivirus
Bit defender Antivirus is one of the world’s renowned brands are widely accepted by users across the country. But technical faults have arisen so is our
Bitdefender Support Number available to deliver users the most suitable remedies at their desk. Backed by a specialist team, technical experts are always there to deliver solutions that are best suited as per issues are concerned. We troubleshoot every cause of the issue occurring in the antivirus while knowing the deep cause of it. The team working at our end is exceptionally skilled and well-trained who come up with opposite solutions to convey users the most effective remedies at their desk. The technical team utilizes their appropriate skills to provide an accurate resolution within a defined timeframe.