Horos Technical Support

Have a Horos question?

We can help!

Purview, the chief sponsor of Horos, offers personalized technical support services to help you get the most use and value out of Horos.

Prompt, reliable and friendly, our Horos Experts can help you with troubleshooting and solving technical issues. They can also help with Horos installation, set up and configuration. What to expect: Once you submit your issue and payment, a Horos expert will reach out to you directly. You will receive personalized support with flexible communication options including email, phone call, Facetime, and screenshare, depending on the issue and your needs. We only provide support in English, but hope to add more language offerings in the future.

* For a limited time, we are expanding our support offering: now up to 60 minutes per session! *

Other Resources

Not sure if you need support? Check out these other helpful tools and resources.

Horos User GuideHoros AcademyFAQsAsk the Community

Common Troubleshooting Issues and Instructions

Found an issue? Please report issues in the Horos Github Repository

Read: The Top 10 Horos Questions Answered

Having trouble downloading Horos?
Issues can arise when the operating system or the hardware is not compatible with the version of Horos you are using. The following steps may help:

Do you have an older computer or operating system, and the latest version of Horos is not working?
Try deleting the latest version and downloading an older version of Horos, listed above.

You have a new computer with the latest hardware (M1, M2, or M3 chips) and operating system, and Horos is crashing?
If you have a new Mac computer, you should be downloading the latest version of Horos found at the top of the download page accessible here. If you are still having issues, try one or both of the solutions below:

1. Replace the Horos Plugin by replacing the file directly in the plugins folder:
– Go to the library folder on your computer: user/library/application support/Horos/plugins
– Delete the file: HorosCloud.horosplugin
– Replace with the plugin file found here

2. Replace the Horos Plugin by replacing within Horos: – Close the prompt to replace the plugin upon opening
– Navigate to Plugins (located in the top menu in between ‘ROI’ and ‘Recent Studies’)
– In the dropdown, select ‘manage plugins’
– When the window pops up, click the upper left tab, ‘Installed Plug-Ins’ (if not already selected)
– Select and delete the existing Horos Cloud Plugin
– In the same window, navigate to the center tab, “Horos Plugins” where there will be an option to download the latest version of the Horos Cloud Plugin.
– Click ‘Download and Install’ (bottom right)
– Restart Horos

Still having trouble?
If none of these troubleshooting steps worked for you, we suggest reporting the issue on Github or, if necessary, reaching out to Horos paid support for help with the form above. If you need help getting started with how to use Horos, we suggest checking out the Horos User Guide.


*Horos is a FREE open-source software. Debugging and troubleshooting are supported by community collaboration. Your contributions are appreciated!