Viscosity 1.10 is now available for both macOS and Windows! This is a big update, with OpenVPN 2.5 support, support for both macOS 12 and Windows 11, support for SSO and SAML authentication, and lots of other new features and improvements.
OpenVPN 2.5 brings several new features to VPN connections, including support for the ChaCha20-Poly1305 cipher, TLS 1.3 support, improved session token management, and many other networking improvements. OpenVPN 2.5 is backwards compatible with servers running older versions of OpenVPN, however Viscosity still includes OpenVPN 2.4 which can be enabled at any time under Preferences->Advanced.
This release also adds support for the latest macOS and Windows operating systems. macOS 12 (Monterey), expected to be available shortly, is now supported. Windows 11, just recently released, is now fully supported as well.
Please note that while macOS 12 is supported, iCloud Private Relay beta (available in macOS 12) has several known incompatibilities with common VPN setups. We hope to have improved compatibility with Private Relay in a future update.
Viscosity 1.10 also introduces support for SSO and SAML authentication, allowing OpenVPN setups to better integrate into existing enterprise authentication systems. For those with custom OpenVPN server setups, we expect to have setup guides on how to configure SSO/SAML server-side in our knowledge base soon.
Viscosity’s Import from Server feature has also been overhauled, and now supports a number of new features, including web-based authentication (including SSO/SAML), automatic detection and TOTP two-factor enrollment, and support for OpenVPN Cloud.
Also included are many additional small improvements and bug fixes. More details can be found in the release notes below.
Finally, this update requires macOS 10.15 or later on Mac, and Windows 10 or later on Windows. macOS 10.13 and 10.14, and Windows 7 and 8.1, are no longer supported. These older OS versions are either no longer receiving security updates, or require the use of deprecated OS APIs that make supporting newer OS versions significantly more difficult. Older Viscosity releases that will run on these versions can still be found at the Legacy Downloads page.
Version 1.10 Mac Release Notes:
Version 1.10 Windows Release Notes: