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Github Copilot AI Agent fails to process requests: Sorry, no response returned #253898

Closed as not planned
@alex-pollan

Description

@alex-pollan

Type: Bug

When I use the AI Agent with Claude Sonnet 4 the agent respond with "Sorry, no response returned" many times, I have to click Try Again, then it progresses with the request and display the message again, and so on many times.

Extension version: 0.28.5
VS Code version: Code 1.101.2 (2901c5a, 2025-06-24T20:27:15.391Z)
OS version: Windows_NT x64 10.0.22631
Modes:

System Info
Item Value
CPUs Intel(R) Core(TM) i7-8665U CPU @ 1.90GHz (8 x 2112)
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
vulkan: disabled_off
webgl: enabled
webgl2: enabled
webgpu: enabled
webnn: disabled_off
Load (avg) undefined
Memory (System) 31.81GB (6.84GB free)
Process Argv --crash-reporter-id b62322b8-9439-4429-b359-880872b0c21d
Screen Reader no
VM 0%
A/B Experiments
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pythonvspyt551:31249599
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binariesv615:30325510
c4g48928:30535728
azure-dev_surveyone:30548225
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h48ei257:31000450
pythontbext0:30879054
cppperfnew:31000557
dwnewjupyter:31046869
pythonrstrctxt:31112756
nativeloc2:31192216
5fd0e150:31155592
dwcopilot:31170013
6074i472:31201624
dwoutputs:31242946
customenabled:31248079
9064b325:31222308
copilot_t_ci:31333650
e5gg6876:31282496
pythoneinst12:31285622
bgtreat:31268568
4gafe986:31271826
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generatesymbolt:31295002
convertfstringf:31295003
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usemarketplace:31336439
nesew2to5:31336538
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nes-diff-11:31337487
testaa123:31335226
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