Home → Guides :: Virtuoso → Troubleshooting Tips and Tricks → Component 'mscomctl.ocx' or one of its dependencies not correctly registered
When the user attempts to add a new palette to Virtuoso, they receive the following dialog:
There are many things that can cause the MSCOMCTL.OCX file to not be properly registered. The most common is if UAC is not properly configured on the workstation and the users are unable to registered due to UAC issues.
Make sure that UAC is properly configured on the workstation, then re-run the Virtuoso Workstation Install. Please refer to this article: User Account Control (UAC) Information for further information on properly configuring UAC.