blazor application crash when debugging after windows march 14 2023 updates

Question

My blazor app crashes at startup when debugging. If I start it without the debugger it works ok. This happened on march 15 after .net 6.0.15 updates.

This is the trace:

Microsoft.WebAssembly.Diagnostics.DevToolsProxy[0] DevToolsProxy::Run: Exception System.AggregateException: One or more errors occurred. (Index was out of range. Must be non-negative and less than the size of the collection. (Parameter 'index')) ---> System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection. (Parameter 'index') at System.Collections.Generic.List1.get_Item(Int32 index) at Newtonsoft.Json.Linq.JContainer.GetItem(Int32 index) at Newtonsoft.Json.Linq.JArray.get_Item(Object key) at Microsoft.WebAssembly.Diagnostics.MonoProxy.AcceptEvent(SessionId sessionId, String method, JObject args, CancellationToken token) at Microsoft.WebAssembly.Diagnostics.DevToolsProxy.OnEvent(SessionId sessionId, String method, JObject args, CancellationToken token) --- End of inner exception stack trace --- at System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions) at System.Threading.Tasks.Task1.GetResultCore(Boolean waitCompletionNotification) at System.Threading.Tasks.Task`1.get_Result() at Microsoft.WebAssembly.Diagnostics.DevToolsProxy.Run(Uri browserUri, WebSocket ideSocket)

Googled and no results found for this issue. Tried to update nuget packages to 6.0.15 and no results.

Answer 1

There seems to be an issue with the recent Update, see related discussion

A fix for me was to remove all breakpoints from code. From the Debug menu, choose Clear All Breakpoints (CTRL+SHIFT+F9)

Link

Answer 2

Its fixed in the latest version of Edge.. Version 111.0.1661.44 (Official build) (64-bit)

Update your Edge installation to the latest version