.NET MAUI: Hot Reload does not work

[SergeyChereshnyuk]

Type: Bug

The hot reload does not work for iOS, Android, and Mac platforms. I got the following error in the ".NET MAUI" output:

"Error calling hot-reload launch customizer: Error writing JSON RPC Message: MessagePackSerializationException: Failed to serialize System.Exception value.."

Extension version: 1.7.3
VS Code version: Code 1.96.2 (Universal) (fabdb6a30b49f79a7aba0f2ad9df9b399473380f, 2024-12-19T10:22:47.216Z)
OS version: Darwin arm64 24.2.0
Modes:

System Info

Item	Value
CPUs	Apple M3 Pro (11 x 2400)
GPU Status	2d_canvas: enabled canvas_oop_rasterization: enabled_on direct_rendering_display_compositor: disabled_off_ok gpu_compositing: enabled multiple_raster_threads: enabled_on opengl: enabled_on rasterization: enabled raw_draw: disabled_off_ok skia_graphite: disabled_off video_decode: enabled video_encode: enabled webgl: enabled webgl2: enabled webgpu: enabled webnn: disabled_off
Load (avg)	2, 2, 3
Memory (System)	36.00GB (2.29GB free)
Process Argv	--crash-reporter-id e17ca72e-c840-459c-96a9-6c865d43ccb4
Screen Reader	no
VM	0%

A/B Experiments

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vspor879:30202332
vspor708:30202333
vspor363:30204092
vscod805cf:30301675
binariesv615:30325510
vsaa593cf:30376535
py29gd2263:31024239
vscaat:30438848
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azure-dev_surveyone:30548225
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pythonnoceb:30805159
pythonmypyd1:30879173
2e7ec940:31000449
pythontbext0:30879054
cppperfnew:31000557
dsvsc020:30976470
pythonait:31006305
dsvsc021:30996838
dvdeprecation:31068756
dwnewjupyter:31046869
newcmakeconfigv2:31071590
nativerepl1:31139838
pythonrstrctxt:31112756
nativeloc1:31192215
cf971741:31144450
iacca1:31171482
notype1cf:31157160
5fd0e150:31155592
dwcopilot:31170013
stablechunks:31184530
6074i472:31201624

[udlose]

I get the same error in VisualStudio 2022 v17.13.6 and v17.14.0 Preview 5.0

[BretJohnson]

@udlose what’s the error you get in Visual Studio? Those use different code, so the error must be at least somewhat different. Also, would you mind reporting it thru VS feedback, doing Help / Send Feedback/ Report a Problem and ideally sharing the link here. I want to look into it, but VS Feedback is the place for Visual Studio issues.

As for the VS Code issue here, it should long be fixed. I need to get it cleaned up and will do that later today. But I do want to dig into your issue. Thanks for helping with that.

[udlose]

@BretJohnson I apologize for posting in this forum. Literally 10 secs after I posted, I noticed the forum was for VSCode. I'll fire it up tonight after work (the MAUI app is a personal side project) and post the error on the VS Feedback site.

[BretJohnson]

@udlose No worries & thanks. If your project is on github & you don't mind sharing a link to it, that can help but isn't required.

[udlose]

@BretJohnson It is but it's a private repo (still learning MAUI). I just added you as a contributor with read access. lmk what you find :). You should have an invitation to the repo waiting for you.

[udlose]

@BretJohnson any luck yet?

[udlose]

@BretJohnson any luck yet?

[emaf]

@udlose are you still able to reproduce this? If so, could you share more details (i.e., this is for XAML Hot Reload and the steps to reproduce it)?