Supported Operating Systems

Backblaze Online Backup supports and has client software for these operating systems

Windows

Windows 7 (32-bit and 64-bit)

Windows 8 (32-bit and 64-bit)

Windows 10 (32-bit and 64-bit)

Windows 11 (Windows 11 offers 64-bit only)

Mac OS X

Mavericks 10.9.x*

Yosemite 10.10.x*

El Capitan 10.11.x*

* While still supported by Backblaze, the lack of security updates from Apple and the expiry of root security certs on these systems will require additional steps, discussed here. 

macOS 

Sierra 10.12.x

High Sierra 10.13.x

Mojave 10.14.x

Catalina 10.15.x

Big Sur 11 

Monterey 12

Backblaze includes native support for M1 Macs

Operating Systems that are not supported

Windows

Windows Server of any variety, including SBS

Windows 95

Windows 98

Windows 2000

Windows ME

Windows XP (Backblaze support ended August 1, 2019)

Windows Vista (Backblaze support ended August 1, 2019)

Mac

Mac OS X 10.4 Tiger (Backblaze support ended February 1, 2013)

Mac OS X 10.5 Leopard (Backblaze support ended August 1, 2019)

Mac OS X 10.6 Snow Leopard (Backblaze support ended August 1, 2019)

Mac OS X 10.7 Lion (Backblaze support ended August 1, 2019)

Mac OS X 10.8 Mountain Lion (Backblaze support ended April 1st, 2021)

Mac OS X Server (10.8 and greater) can be backed up, but not all Server specific areas are allowed for backup, hence it is considered unsupported.

Linux, BSD, Unix and other *nix systems.

These operating systems are not supported and the Backblaze software cannot be installed on them.

Alpha, Beta, Prerelease, and Preview operating systems

These operating systems are not supported. While Backblaze may be able to be installed, features, performance, and validity of backups may not have been tested.