# How to configure Bitdefender's Firewall for Backblaze

Zack

Depending on its configuration, Bitdefender's firewall may block Backblaze from operating correctly.

### 5. Locate bztransmit.exe or bztransmit64.exe

Navigate to the location of bztransmit and choose the right version for your OS and click OK.

• For Windows XP, it's in C:\Program Files\Backblaze\bztransmit.exe
• For Windows Vista, 7, 8 and 10 32-bit, it's in C:\Program Files\Backblaze\bztransmit.exe
• For Windows Vista, 7, 8 and 10 64-bit, it's in C:\Program Files (x86)\Backblaze\bztransmit64.exe

(If you don't know if you're running a 32-bit or 64-bit version of Windows, choose both bztransmit.exe and bztransmit64.exe separately, and perform steps 3 and 4 twice, once for bztransmit.exe, and again for bztransmit64.exe)