Dynamo 3.6 Packages Not Loaded on First Launch in Revit 2026

Revit
,
1

Hello everyone,

I am experiencing an issue with Dynamo 3.6 in Revit 2026 and would like to know if anyone has encountered the same problem or found a solution.

I manually installed the following packages into the folder below:

C:\Users\UserName\AppData\Roaming\Dynamo\Dynamo Revit\3.6\packages

Both packages were downloaded from the Dynamo Package Manager website.

However, when I start Revit and then launch Dynamo for the first time, these packages do not appear in the Package Library. If I close Dynamo and launch it again within the same Revit session, the packages are loaded correctly and become available.

Steps to reproduce:

  1. Start Revit 2026.
  2. Launch Dynamo 3.6.
  3. Confirm that the installed packages are not displayed.
  4. Close Dynamo.
  5. Launch Dynamo again.
  6. The packages are now displayed and work normally.

Has anyone experienced a similar issue? Are there any known causes or solutions?

Thank you in advance for your help.

Environment:

  • Revit 2026
  • Dynamo 3.6
  • Packages: archi-lab.net, Clockwork for Dynamo 3.x
  • Packages installed manually in the Dynamo packages folder
2

Can you share your dynamo settings file? Few things to check there.

3

@jacob.small This is the Dynamo settings file.

DynamoSettings.txt (5.6 KB)

4

Did you edit this in any way before posting? The path for your package directory seems off, which would explain why it isn’t showing on first load.

5

Before posting, I reset the settings and launched Dynamo again.

The first file I attached was generated immediately after startup. I later replaced it with the second file for reference.

Other than replacing my actual username with “USER” for privacy reasons, I did not make any changes to the file.

6

Not sure what this indicates as I only see one file here, so I’m going to confirm what I think your steps were:

  1. You closed all Revit and Dynamo instances on your CPU.
  2. You went to %appdata%\Dynamo\Dynamo Revit\3.6 and deleted, moved, renamed or otherwise made unfindable the DynamoSettings.txt file.
  3. You restarted Revit, and then Dynamo.
  4. You quit Dynamo and Revit.
  5. You went into %appdata%\Dynamo\Dynamo Revit\3.6 and copied DynamoSettings.txt to a new location.
  6. You modified the DynamoSettings.txt, using a “find replace” tool to swap your actual username with "USER", and saved the file.
  7. You posted the edited file on the forum.

Assuming that’s right, (or close to it), were there any other edits made to the file beyond that one? Nothing else jumps out but best to be sure.

Also can you confirm there are no special characters in your username? Any chance someone is attempting to manage your Dynamo settings by putting it in place at startup?

A next data gathering step is to compare a settings file on first start to one after the packages load so we can see if something is changed. Document comparison in Notepad++ should work.