Card #3502 · Autodesk App Store
Revit 2025 DLL and System.Text.Json compatibility issues
Developers are experiencing crashes and assembly loading failures when migrating Revit add-ins to Revit 2025 and .NET 8. Specifically, there are conflicts with system.text.json.dll where the software fails to find the correct version or crashes upon loading.
Pain score
0.22/ 1.00 · weighted product of four components
Reach0.82distinct authors (log-normalized)
Recency1.00freshness decay, half-life months
Engagement0.83upvotes + comments, normalized
Monetization0.50willingness-to-pay cues in evidence
§ Evidence — 3 verified quotes
Revit 2025 on up is incompatible with the latest version. the latest version of system.text.json uses assembly version 10.0.0, but when i try to use my addins, it incorrectly says it cannot find the version 8.0.0
Revit crashes when we load the add-in now.
I have an app which has a dependency on Text.JSON. If it targets NET48 / Revit 2024 everything works fine. When I target NET 8 / Revit 2025 I see the following warning.
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