Viscosity version 1.8.1 is now available for both macOS and Windows! This update is primarily a maintenance release and it includes a number of small tweaks and improvements for both platforms.

Viscosity now integrates the new U2F APIs introduced in Windows 10 1903. This provides a more native and consistent experience for users also using U2F for Windows authentication, as well as resolving U2F access issues under Windows 10 1903.

We've also worked behind the scenes to make deploying Viscosity in managed macOS environments much easier. Deployments in multi-user environments has been simplified, and the managed installer templates are now able to handle the Start on Login option without the need for custom scripts. Documentation is also now available on how to deploy Viscosity using tools like Munki and Jamf.

Finally, we've also identified some OpenVPN server setups that will unnecessarily push a route-delay command, significantly delaying connection time. Viscosity will now ignore this command when it isn't needed.

Version 1.8.1 Mac Release Notes:

Version 1.8.1 Windows Release Notes:

The 1.8.1 update can be automatically installed from inside Viscosity, or downloaded and manually installed. For support with this version please visit our support section.

Viscosity 1.8 is now available for both macOS and Windows! This is a big update, with significant performance improvements for VPN connections. Both macOS and Windows users should immediately notice their OpenVPN connections connecting faster, with slightly lowered CPU usage. Windows users should also notice significantly improved maximum throughput on high-speed network connections.

A traffic graph has also been added to the main menu, providing a quick overview of how your VPN connection is being utilised without needing to open the Details menu. The style of this graph can also be customised from the Appearance section, or turned off for those who prefer to keep things simple.

By popular demand we've also overhauled Viscosity's menu icon system. Not only has this allowed us to include some snappy new icon designs to choose from, all icons now feel much more at home on both macOS and Windows. In particular, on macOS icons with coloured components will now look great in both light and dark mode, behave correctly when selected, and on secondary monitors as well.

On Windows Viscosity now also supports Network Location Awareness for routed/TUN connections. This will resolve an issue that caused some applications, including Microsoft Office and many UWP based apps, from failing to detect that a network connection is available when a VPN connection is connected.

Finally, version 1.8 also brings offical support for macOS 10.15 (Catalina), which is expected to be released next month.

Version 1.8 Mac Release Notes:

Version 1.8 Windows Release Notes:

The 1.8 update can be automatically installed from inside Viscosity, or downloaded and manually installed. For support with this version please visit our support section.

Viscosity version 1.7.16 is now available for both macOS and Windows! This update is primarily a small maintenance release with a focus on bug fixes and minor enhancements.

The Mac update addresses a regression that could result in reachability checks to fail when using a fixed IP version for remote OpenVPN (or proxy) servers, while the Windows update includes a fix for VPN connections using non-standard MTU values. Also included for both platforms are a number of minor requested enhancements to the user interface and connection performance.

Version 1.7.16 Mac Release Notes:

Version 1.7.16 Windows Release Notes:

The 1.7.16 update can be automatically installed from inside Viscosity, or downloaded and manually installed. For support with this version please visit our support section.

Viscosity version 1.7.15 is now available for both Mac and Windows! This version includes U2F and PKCS#11 improvements, updated versions of both OpenVPN and OpenSSL, and a number of fixes and improvements for both platforms.

We've placed a focus on two-factor authentication for this release, with general improvements to Viscosity's U2F authentication support, including the ability to use U2F tokens from additional manufacturers. PKCS#11 support has also been improved in the Windows version, with smoother handling of problems that may arise when using a token or smartcard.

On the maintenance front, OpenVPN has been updated to version 2.4.7, which includes a number of small bug fixes. OpenSSL has also been updated to version 1.0.2r. The Windows release also includes an updated VPN network adapter driver with slightly improved performance, while the macOS release fixes an issue that could result in some VPN connections failing to try additional remote servers if the first one fails to connect.

Version 1.7.15 Mac Release Notes:

Version 1.7.15 Windows Release Notes:

The 1.7.15 update can be automatically installed from inside Viscosity, or downloaded and manually installed. For support with this version please visit our support section.

Viscosity version 1.7.14 is now available for both Mac and Windows! This is a maintenance update that resolves a number of small regressions that unfortunately snuck into the 1.7.13 release, as well as a number of additional minor bug fixes.

In particular, this update fixes an issue that could cause certain OpenVPN files to be blocked from loading under the new Windows sandbox. If you received an error message similar to "Cannot load certificate file" in your connection log with version 1.7.13, this was unfortunately the cause, and it should now be resolved. For further information please refer to the release notes below.

Version 1.7.14 Mac Release Notes:

Version 1.7.14 Windows Release Notes:

The 1.7.14 update can be automatically installed from inside Viscosity, or downloaded and manually installed. For support with this version please visit our support section.

Viscosity version 1.7.13 is now available for both Mac and Windows! This version includes security and performance enhancements for the Windows release, an updated version of OpenSSL, and a number of small tweaks and improvements for both platforms.

Previously version 1.7.8 of Viscosity for Mac introduced sandboxing and privilege deescalation of the OpenVPN process for added security. These security features help to protect against possible future threats that could arise against OpenVPN itself, both local and remote. We're pleased to announce that the 1.7.13 update has added these features to the Windows version as well. This all happens behind the scenes, and shouldn't have any noticeable effect on your VPN connections.

The Windows version also includes reworked PKCS#11 support for improved library loading and token support, and a 64-bit build of OpenVPN. The Mac version also includes a number of improvements to its main menu for improved functionality, as well as a number of small tweaks to keep OpenVPN connections running smoothly.

Version 1.7.13 Mac Release Notes:

Version 1.7.13 Windows Release Notes:

The 1.7.13 update can be automatically installed from inside Viscosity, or downloaded and manually installed. For support with this version please visit our support section.

Version 1.7.12 of Viscosity has been released for both macOS and Windows! Along with a number of improvements and bug fixes, this release adds improved support for macOS 10.14 (Mojave), including Dark Mode support.

Also on the macOS side of things, this release includes a new menu system built from the ground up with significant performance improvements. Users with a large number of connections should notice vastly improved performance, while accessibility access using the keyboard has also been enhanced.

OpenSSL has also been updated to version 1.0.2p, while support for OS X 10.9 (Mavericks) has been removed.

Version 1.7.12 Mac Release Notes:

Version 1.7.12 Windows Release Notes:

The 1.7.12 update can be automatically installed from inside Viscosity, or downloaded and manually installed. For support with this version please visit our support section.

We're pleased to annouce the release of a new simple tool designed to make it much easier to get started running an OpenVPN server. OpenVPN Configuration Generator, or simply openvpn-generate, can handle generating OpenVPN server configuration files, and help generate and manage user certificate and keys. It's freely available for macOS, Windows, and Linux.

As we've previously mentioned, we have an extensive list of tutorials for setting up an OpenVPN server on a variety of platforms. However the point where many users get stuck has always been generating the files needed by the OpenVPN server. Generating files, such as the configuration file, Diffie-Hellman parameters file, server certificate and key, and certificate and key files for clients, can be complex and confusing. Tools like EasyRSA sadly don't make it particularly easy, and on macOS and Windows require downloading large external frameworks just to run.

The OpenVPN Configuration Generator aims to solve this by providing an easy-to-use command line interface that quickly allows generating these files with secure defaults. This tool is designed to be simple and fast to use: its focus is on the generation of the files needed by OpenVPN and nothing more (it is not an OpenVPN server itself).

The OpenVPN Configuration Generator tool can be freely downloaded from here, and we also have detailed documentation on how to use it in our Knowledge Base. We recommend using it alongside one of our server setup guides, however the files it generates will work with any OpenVPN setup.

We're also pleased to report that we've made the source-code for the OpenVPN Configuration Generator tool available as well. Note that it does link with Viscosity's core framework, which is not included.

We hope the OpenVPN Configuration Generator tool makes it easier to get started running your own OpenVPN server. For feedback or enhancement requests please don't hesitate to contact us.

Viscosity version 1.7.11 is now available for both Mac and Windows! This update is largely a maintenance release, with bug fixes and small improvements to keep things running smoothly.

It includes a back-ported fix to OpenVPN 2.4.6 to resolve an issue with expired session tokens. This has allowed Viscosity to re-enable the use of session tokens during renegotiations, which was disabled in the previous release. Also notable with the Mac version is that a time limit is now placed on Before Connect, Connected, and Disconnected scripts, which prevents Viscosity from appearing to hang indefinitely if a script never exits.

Version 1.7.11 Mac Release Notes:

Version 1.7.11 Windows Release Notes:

The 1.7.11 update can be automatically installed from inside Viscosity, or downloaded and manually installed. For support with this version please visit our support section.

Version 1.7.10 of Viscosity has been released for both Mac and Windows! This update has a focus on improved support for bridged VPN connections, with new options for DHCP-set routes, automatic route delay, and routing and DNS improvements. We've also made a great deal of small changes and bug fixes to address user feedback.

Bridged (TAP) connections can now use a "route-delay auto" advanced command to wait for a DHCP and/or IPv6 auto-configuration assigned IP address, instead of having to manually specify the number of seconds to wait. This will allow for faster initial connection times, especially for those on low-latency connections.

This version also supports the use of a DHCP-assigned default gateway (using a "dhcp" parameter for the Default Gateway option) to make IPv4 routing setup easier, along with a "route-ipv6-gateway" advanced command to make IPv6 setup easier.

On the macOS side, we've also improved DNS support when using DHCP and IPv6 auto-configuration, added support for routes pushed via DHCP, and added support for Continuity so macOS features like HandOff, message forwarding, and receiving calls should work as expected while connected to a VPN connection.

Finally, this release also works around a session-token handling issue in OpenVPN that could incorrectly cause a connected VPN connection to disconnect with an authentication failure once a session timeout was reached.

Version 1.7.10 Mac Release Notes:

Version 1.7.10 Windows Release Notes:

The 1.7.10 update can be automatically installed from inside Viscosity, or downloaded and manually installed. For support with this version please visit our support section.