Revit 2018 is considered a legacy version. Autodesk maintains an archive of content libraries for previous versions.
As of 2026, Revit 2018 is long out of support. Autodesk no longer issues hotfixes for its library. However, architects with legacy projects (e.g., buildings built 2017–2020) must preserve these libraries for archival and renovation work. download revit family library 2018
Pro Advice: Once you have downloaded the Revit family library 2018, back it up to: Revit 2018 is considered a legacy version
Never lose the library again. Adobe and AutoCAD may change, but a well-filed .rfa is forever. Never lose the library again
en-US, find the RVT.msi or Content.cab files.C:\ProgramData\Autodesk\RVT 2018\Libraries\Warning: Do not delete or move the original .msi files; they are required for future repairs.
| Error Message | Solution |
| :--- | :--- |
| "No default family template file specified" | Go to Options > File Locations > Default template file. Browse to Libraries\US Imperial\Templates\DefaultMetric.rte |
| "Cannot load family because it was saved in a newer version" | You downloaded a Revit 2020 family. You need 2018-specific files. Use the "Save as" function in a newer Revit to downgrade (limited success). |
| "Library folder is read-only" | Right-click the Libraries folder > Properties > Uncheck "Read-only" > Apply to all subfolders. |
| "Missing Imperial folder entirely" | You likely only installed Metric. Re-run the content installer and select "Imperial" as an additional language. |
If the account portal does not display legacy content, use the direct links provided by Autodesk support.
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