[Error] [GitHub.copilot-chat] unhandlederror-An unexpected error occurred: {"type":"networkError","reason":"Please check your fire...

Error Message

unhandlederror-An unexpected error occurred: {"type":"networkError","reason":"Please check your firewall rules and network connection then try again. Error Code: net::ERR_NAME_NOT_RESOLVED.","reasonDetail":"net::ERR_NAME_NOT_RESOLVED: : {\"<REDACTED: user-file-path>":true,\"<REDACTED: user-file-path>":false}","requestId":"33f26bd3-8d95-453c-bd77-7b372d5c68e0"}  Error: An unexpected error occurred: {"type":"networkError","reason":"Please check your firewall rules and network connection then try again. Error Code: net::ERR_NAME_NOT_RESOLVED.","reasonDetail":"net::ERR_NAME_NOT_RESOLVED: : {\"<REDACTED: user-file-path>":true,\"<REDACTED: user-file-path>":false}","requestId":"33f26bd3-8d95-453c-bd77-7b372d5c68e0"} 	at Object.n [as fromUnknown] (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:1166:3925) 	at bbr (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2815:13437) 	at ag._performFetch (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2813:16150) 	at async ag._streamEditsImpl (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2813:16728) 	at async ag.streamEdits (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2813:14656) 	at async ag.streamEditsWithFiltering (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2813:14109) 	at async ag.doGetNextEditWithSelection (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2813:10523) 	at async ag.provideNextEdit (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2813:5383) 	at async O2._executeNewNextEditRequest (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2666:14762) 	at async O2.fetchNextEdit (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2666:10410) 	at async O2._getNextEditCanThrow (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2666:4772) 	at async O2.getNextEdit (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2666:2550)

Stack Trace

    at Object.n [as fromUnknown] (../src/util/common/errors.ts:19:9)
    at bbr (../src/extension/xtab/node/xtabProvider.ts:1758:55)
    at mapChatFetcherErrorToNoNextEditReason (../src/extension/xtab/node/xtabProvider.ts:961:39)
    at async ag._streamEditsImpl (../src/extension/xtab/node/xtabProvider.ts:1002:22)
    at async ag.streamEdits (../src/extension/xtab/node/xtabProvider.ts:835:10)
    at async ag.streamEditsWithFiltering (../src/extension/xtab/node/xtabProvider.ts:790:10)
    at async ag.doGetNextEditWithSelection (../src/extension/xtab/node/xtabProvider.ts:562:9)
    at async ag.provideNextEdit (../src/extension/xtab/node/xtabProvider.ts:215:13)
    at async O2._executeNewNextEditRequest (../src/extension/inlineEdits/node/nextEditProvider.ts:956:13)
    at async O2.fetchNextEdit (../src/extension/inlineEdits/node/nextEditProvider.ts:702:14)
    at async O2._getNextEditCanThrow (../src/extension/inlineEdits/node/nextEditProvider.ts:427:18)
    at async O2.getNextEdit (../src/extension/inlineEdits/node/nextEditProvider.ts:305:12)
    at Timeout._onTimeout (./src/vs/base/common/errors.ts:32:11)
    at listOnTimeout (node:<REDACTED: user-file-path>:605:17) [not deminified]
    at process.processTimers (node:<REDACTED: user-file-path>:541:7) [not deminified]

Raw Stack Trace (minified)

Error: An unexpected error occurred: {"type":"networkError","reason":"Please check your firewall rules and network connection then try again. Error Code: net::ERR_NAME_NOT_RESOLVED.","reasonDetail":"net::ERR_NAME_NOT_RESOLVED: : {\"<REDACTED: user-file-path>":true,\"<REDACTED: user-file-path>":false}","requestId":"33f26bd3-8d95-453c-bd77-7b372d5c68e0"}  Error: An unexpected error occurred: {"type":"networkError","reason":"Please check your firewall rules and network connection then try again. Error Code: net::ERR_NAME_NOT_RESOLVED.","reasonDetail":"net::ERR_NAME_NOT_RESOLVED: : {\"<REDACTED: user-file-path>":true,\"<REDACTED: user-file-path>":false}","requestId":"33f26bd3-8d95-453c-bd77-7b372d5c68e0"} 	at Object.n [as fromUnknown] (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:1166:3925) 	at bbr (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2815:13437) 	at ag._performFetch (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2813:16150) 	at async ag._streamEditsImpl (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2813:16728) 	at async ag.streamEdits (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2813:14656) 	at async ag.streamEditsWithFiltering (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2813:14109) 	at async ag.doGetNextEditWithSelection (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2813:10523) 	at async ag.provideNextEdit (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2813:5383) 	at async O2._executeNewNextEditRequest (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2666:14762) 	at async O2.fetchNextEdit (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2666:10410) 	at async O2._getNextEditCanThrow (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2666:4772) 	at async O2.getNextEdit (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:2666:2550) 	at Timeout._onTimeout (<REDACTED: user-file-path> VS <REDACTED: user-file-path>/resources\app\extensions\copilot\dist\extension.js:3:12) 	at listOnTimeout (node:<REDACTED: user-file-path>:605:17) 	at process.processTimers (node:<REDACTED: user-file-path>:541:7)

Details

Property	Value
Bucket ID	`b6664b01-d888-45c7-001f-01cfb00d8f8e`
Extension Version	0.56.0
Last Seen	Sun Jul 12 2026 23:54:30 GMT+0000 (Coordinated Universal Time)
Platforms	win32
Product	VSCode

This issue was automatically created from the VS Code Errors Dashboard

Stable Release Anomaly Details

Anomaly type: new
Previous stable: 0.55.0
Current stable: 0.56.0

This error signature is new in GitHub.copilot-chat 0.56.0 and did not appear in 0.55.0. It surfaces as an unhandled networkError (ERR_NAME_NOT_RESOLVED / ERR_INTERNET_DISCONNECTED / ERR_NETWORK_CHANGED) originating in the NES fetch path (Object.n [as fromUnknown] → bbr → ag._performFetch → provideNextEdit). These are user-connectivity failures that are currently escaping as unhandled errors rather than being caught and handled gracefully.

Affected buckets (same signature, coalesced into this issue)

Bucket	Users	Platform
`b6664b01` (representative)	4737	win32
`368bc58a`	4441	win32
`de00fa46`	4279	win32
`220d2689`	2041	win32
`98782794`	2015	win32

Combined impact: ~17.5K users across 5 buckets.

Note: This is extension telemetry, so insider-build commit-range narrowing (last-good / first-bad / GitHub compare) does not apply.

Generated by errors-stable-scan · 2K AIC · ⌖ 24.8 AIC · ⊞ 52.5K · ◷

fix: don't report NES fetch failures as unexpected errors (fixes #325643

Seeing a similar problem with VSCode (1.122.1-1) and BYOK:

Reason: Please check your firewall rules and network connection then try again. Error Code: net::ERR_NETWORK_CHANGED.: Error: Please check your firewall rules and network connection then try again. Error Code: net::ERR_NETWORK_CHANGED. at dG._provideLanguageModelResponse (/opt/visual-studio-code/resources/app/extensions/copilot/dist/extension.js:1710:16552) at async dG.provideLanguageModelResponse (/opt/visual-studio-code/resources/app/extensions/copilot/dist/extension.js:1710:17555)

This seems to fix it:

sudo sysctl -w net.ipv6.conf.br0.disable_ipv6=1

Regression Details — continuing into copilot-chat `0.68.0`

The NES networkError signature tracked by this issue (first seen 0.56.0) continues in the latest extension regression scan comparing GitHub.copilot-chat 0.63.0 → 0.68.0 (product VSCode). These remain user-connectivity failures (ERR_NAME_NOT_RESOLVED / ERR_NETWORK_CHANGED) escaping as unhandled errors in the NES fetch path (fromUnknown → _performFetch → streamEdits → provideNextEdit → fetchNextEdit).

Product: VSCode · Extension: GitHub.copilot-chat
Regression type: new (bucket-ID drift — new minified hashes for the same logical error)
Baseline → current: 0.63.0 → 0.68.0 (stable)

Continuing buckets on v0.68.0 (new minification-drift IDs; `599051c3` linked in Kusto)

Bucket	Users (0.68.0)	Platform	Error code
`599051c3`	7,665	win32	`ERR_NAME_NOT_RESOLVED`
`9a29b3ed`	3,138	win32	`ERR_NETWORK_CHANGED`
`321825d2`	3,125	win32	`ERR_NETWORK_CHANGED`

The NES fetch path continues to surface these connectivity failures as unhandled errors at high volume (~13.9K users across these buckets) on current stable. Representative bucket 599051c3 linked to this issue in the errors dashboard.

Note: This is extension telemetry, so insider-build commit-range narrowing (last-good / first-bad / GitHub compare) does not apply.

Generated by errors-regression-scan · copilot · opus48 · 252.2 AIC · ⌖ 29.1 AIC · ⊞ 8.8K · ◷

Navigation Menu

Repository navigation

[Error] [GitHub.copilot-chat] unhandlederror-An unexpected error occurred: {"type":"networkError","reason":"Please check your fire... #325643

Error Message

Stack Trace

Details

Stable Release Anomaly Details

Affected buckets (same signature, coalesced into this issue)

Regression Details — continuing into copilot-chat `0.68.0`

Continuing buckets on v0.68.0 (new minification-drift IDs; `599051c3` linked in Kusto)

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

[Error] [GitHub.copilot-chat] unhandlederror-An unexpected error occurred: {"type":"networkError","reason":"Please check your fire... #325643

Description

Error Message

Stack Trace

Details

Activity

vs-code-engineering commented on Jul 13, 2026

Stable Release Anomaly Details

Affected buckets (same signature, coalesced into this issue)

berkutta commented on Jul 27, 2026

vs-code-engineering commented on Aug 26, 2026

vs-code-engineering commented on Oct 5, 2026

Regression Details — continuing into copilot-chat 0.68.0

Continuing buckets on v0.68.0 (new minification-drift IDs; 599051c3 linked in Kusto)

Metadata

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Issue actions

Regression Details — continuing into copilot-chat `0.68.0`

Continuing buckets on v0.68.0 (new minification-drift IDs; `599051c3` linked in Kusto)