Hi All,
After updating Windows and Revit to version 26.5, I can no longer open Dynamo and receive an error message; this error causes Revit to close completely.
Do you see anything odd in the Revit journals or Dynamo log files (if such is generating)?
2026-08-24 16:39:09Z : Successfully sent CER error report
2026-08-24 16:39:09Z : Dynamo Unhandled Exception
2026-08-24 16:39:09Z : Couldn’t find a compatible Webview2 Runtime installation to host WebViews.
2026-08-24 16:39:17Z : Successfully sent CER error report
dynamoLog_f29532ac-cde2-41dc-9f83-a06c41c7bed3.txt (11.9 KB)
Ok that’s understandably an issue - webview2 is the framework used for much of the UI in Dynamo.
However we aren’t seeing why it’s missing. Can you post your Revit journal too?
journal.0283.txt (265.7 KB)
also the revit start with strange behaviour when open. i can open it and work normally. the clash only when open dynamo
This happens when updating Windows (not the Revit software). I also tried completely uninstalling and reinstalling Revit, but the problem persists.
Looks like you’re not seeing anything webview2 related - Revit’s Home page is similarly a webview2 component. Might be a broken windows or .NET, but there isn’t any type of threads to pull in the logs so I’m at a lost. Please reach out to one of my colleagues in support by creating a new ticket at on the accounts portal at manage.autodesk.com.