About Opening Models that Require an Upgrade

When you open a model from an earlier release of Revit, the model may need to be upgraded to the current release.

In the Revit Open dialog, select a file to see the Revit release that was last used to save the file.

Important: Revit models are not backwards-compatible. If a model is upgraded and saved, you can no longer open the model using an earlier release of the software.
Files that may require an upgrade include the following:

Opening Models within the Software

When you start Revit and then open a model (or load a family) that requires an upgrade, the upgrade process begins automatically. A dialog displays an informational message, indicating the software release of the model and the release to which it will be upgraded. Depending on the size of the model, the upgrade process can take some time.

After the upgrade is complete, save the model to avoid the need to repeat the process. The model will open more quickly next time.
Tip: If you accidentally upgrade a file and save it, you can recover your model from a previous backup. Open the most recent backup file with the appropriate release of Revit (indicated in the message). Some recent changes to the model may be lost, but most of the original project will be intact.

If you do not want to upgrade the model to the current software release, click Cancel Upgrade.

When you click Cancel Upgrade:

Opening Models by Double-Clicking

To start Revit and open the model in one operation, you can navigate your file system and double-click a file. By default, the most recently installed release of the software starts. If the model is based on an earlier software release, the model requires an upgrade.

In this situation, a dialog displays. Select an option:

Considerations for Workshared Models

When you upgrade a workshared project to the current release of Revit, you upgrade the central model. There are a number of considerations when upgrading an established workshared project, however. Refer to the following topics to better understand the implications of upgrading workshared models.