Missing Schema Folder

If the schemas folder is missing, empty, or contains damaged files, the Missing Schema Folder dialog displays. Repair/reinstall Revit, or replace the folder with the contents of the folder from a working Revit installation.

The schema folder contains files related to the processing of units in Revit. This folder must be present, and contain valid files in order for Revit to start properly. If this folder is missing, contains files not expected, or the files are damaged in some way, you will receive an error dialog and Revit will close. You must repair this condition in order to start Revit.

You have 3 options; repair/reinstall the Revit installation, run the RevitUnitSchemas.msi from the installation media, or copy the files from a workstation where Revit is opening correctly to the workstation where Revit is not opening.

To repair/reinstall:

1. Launch Windows Control Panel.
2. Select Uninstall a program.
3. Select Revit 2023 Release from the list.
4. Select Uninstall/Change.
5. After the install wizard launches, select repair or reinstall.
6. Follow the prompts to repair or reinstall.

Run RevitUnitSchemas.msi:

1. Open Windows File Browser.
2. Navigate to the Revit installation media.
3. Perform a search for: RevitUnitSchemas.msi
4. Double Click the RevitUnitSchemas.msi file.
5. When the installer completes, attempt to start Revit again.

Replace schema folder:

1. Open a file browser on a workstation with a working installation of Revit.
2. Copy the contents of the following location: C:\Program Files\Common Files\Autodesk Shared\Revit Schemas 2023 Release, to the same location on the workstation receiving the error.
3. Attempt to start Revit again.