If you are re-installing or need to download the client for a new computer to ensure you have the latest version:

Navigate to the Backblaze Windows download page , download the installer, and run it as an administrator.

You do not need to uninstall your current version of Backblaze to update it. Instead, you should "install over the top" of the existing version to preserve your settings.

Click the Backblaze icon in your system tray (Windows) or menu bar (Mac) and select "About..." .

Running the latest version of Backblaze is crucial for several reasons:

Ensuring your data is safe requires more than just setting up a backup—it requires keeping your backup software up to date. As of 2026, Backblaze continues to update its Computer Backup client to improve performance, enhance security, and support new operating system features.