Revit 2026 Dynamo Package Manager

Revit
1

Hi all,

I’m trying to update my templates to Revit 2026 and while working on installing the necessary packages i’m getting this error

image
image721×125 3.58 KB

I’ve restarted Revit and the pc and no change.
Has anyone encountered this issue?

Thank you.

2

Can you connect to dynamopackages.com?

3

Yes I can. I’m trying to download zips and extract them in appdata/ … / packages but for some reason they won’t show up in Dynamo.

4

Unblock them before extracting. Search ‘mark of the web’ on google to learn more.

Reach out to Autodesk support via the accounts portal to diagnose why the in product package manager isn’t working.

5

Just did that, and copied them in all the folders here

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image798×262 5.18 KB

but Revit still can’t see them. I submitted a ticket and see if Autodesk can fix it.
:woman_shrugging:

6

Based on not having a package download path or a library search path I’d say your settings file is corrupt. Rename your %appdata%\Dynamo\Dynamo Revit\3.4\DynamoSettings.xml file to %appdata%\Dynamo\Dynamo Revit\3.4\DynamoSettings.xml.nope and try again. That should rebuild your settings from scratch. If it happens again check with your IT to see fi they’re mucking about with your Dynamo settings somehow.

7

Actually the loading is slow at non-specific given times for me too.
But it does complete loading after a few minutes.
How long have you waited?

8

I’ve waited around 15m and nothing changed. I’m going to do a fresh install and see if that fixes it.

9

Hello everybody,

Came here to second that I am also having the same problem - “Search for packages” gives an error “Loading the packages is taking longer than expected. Please wait, or restart the Package Manager”.

Tried installing packages manualy (not a first time), but no packages showing as “Installed” in Package Manager.
Packages installed under “C:\Users\USERNAME\AppData\Roaming\Dynamo\Dynamo Revit\3.4”

No .dlls or pkg.json files showing as blocked in properties.
Tried @jacob.small idea to rebuild settings - did not help.

Revit version: 2026.0.1
Dynamo version: v.3.4.1

Thanks for trying to help, maybe somebody got any other ideas?

BTW Revit 2025 package manager working fine.

10

Is there a popup hidden to accept terms and conditions?

11

Not hidden. After settings file reset I got two popups - for data collection as well as Package Manager Terms of Use. All accepted but still the same behaviour.

I must say there are two exceptions in output window:

Could not fetch hosts: Object reference not set to an instance of an object.
Could not fetch hosts: Object reference not set to an instance of an object.
Unobserved task exception: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (One or more errors occurred. (Object reference not set to an instance of an object.))



-------- InnerException --------

One or more errors occurred. (Object reference not set to an instance of an object.)

   at System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions)
   at System.Threading.Tasks.Task`1.GetResultCore(Boolean waitCompletionNotification)
   at Dynamo.PackageManager.PackageManagerSearchViewModel.<>c__DisplayClass163_0.<RefreshAndSearchAsync>b__0(Task`1 t)
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location ---
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot, Thread threadPoolThread)

-------- InnerException --------

Object reference not set to an instance of an object.

   at Dynamo.ViewModels.PackageManagerClientViewModel.ListAll()
   at Dynamo.PackageManager.PackageManagerSearchViewModel.Refresh()
   at Dynamo.PackageManager.PackageManagerSearchViewModel.RefreshAndSearch()
   at System.Threading.Tasks.Task`1.InnerInvoke()
   at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location ---
   at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot, Thread threadPoolThread)
12

Try disabling ALL Revit add-ins and see if that fixes it.

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13

Thank you, @jacob.small ! I can confirm that disabling all Revit add-ins and re-enabling them one at a time resolved the Package Manager issues. Surprisingly, of all the add-ins, the issue was caused by DiRoots.One.

2 Likes