Installation
The AEC.codes QTO add-in adds the AEC.codes ribbon tab to Autodesk Revit, with the QTO panel containing the QTO commands. Installation takes about a minute. After it completes, launch Revit and look for the AEC.codes ribbon tab.
System requirements
- Autodesk Revit 2025, 2026, or 2027
- Microsoft Windows 10 or 11, x64
- .NET 8.0 Desktop Runtime (included in the installer; no separate download required)
- Administrator rights to install (standard Windows elevation prompt)
- ~50 MB free disk space
Public Beta release. Bugs are expected and tracked publicly — see Report a bug in the footer below.
Pay-tier features (XPWE export, Atomic Erase Shared Parameters step) are visible in the UI but disabled during Beta. They unlock at V1.0.
Step-by-step install
- Download the installer from the Download page →
- Run
AECcodes-QTO-Setup.exe. Accept the Windows admin prompt. - Welcome screen → Next.
- License and Privacy screen → review the EULA and the Privacy notice →, check both acceptance boxes, → Next.
- Install location → keep the default or change → Next → Install.
- Finish. Revit must be closed for the installer to complete; restart Revit afterward.
First launch — find the ribbon
Open Revit and load any project. Click the AEC.codes ribbon tab. The QTO panel contains the commands.
If the AEC.codes tab is missing, see Troubleshooting → Ribbon tab does not appear.
Privacy & data
The add-in does not transmit personal data during Beta. The only network calls are:
- A daily check for updates against
aec.codes/qto/version.json. - Optional bug reports submitted through the feedback form →.
See the Privacy notice → for the full breakdown.
Troubleshooting
Installer fails with "Could not write to C:\ProgramData\Autodesk\Revit\Addins\<year>"
Most common cause: Revit is still running. Close all Revit instances and retry the installer.
Ribbon tab does not appear after install
Check %PROGRAMDATA%\Autodesk\Revit\Addins\<year>\ for AECcodes.addin.
If the manifest file is missing, reinstall as administrator.
Antivirus blocked the install
The installer is unsigned during Beta (code-signing certificate is a V1 deliverable).
Add an antivirus exception for AECcodes-QTO-Setup.exe or report the false positive
to your antivirus vendor.
Multiple Revit versions installed — does the manifest land in all of them?
Yes. The installer detects every supported Revit version on the machine and writes a manifest into each.