Some SDK are missing when creating a build configuration

Question

Hello, 
 I have recently been working on other Zephyr projects that use non-Nordic MCUs. I installed raw Zephyr in my documents folder (“C:\Users\gilles.devillers.SECTRONIC\zephyr”). Now, when I’m trying to build my older nRF projects, it didn’t work, showing weird error messages about colliding Python versions. I deleted my build configurations, but now I can’t create a new one: the SDK list only shows Zephyr, but not the installed ncs ones anymore: 
 
 But when exporting the debug information from the VSCode extension, the SDK are all listed: 
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{
 "platform": {
 "os": "win32",
 "osVersion": "Windows 11 Pro",
 "osKernel": "10.0.26100",
 "vscode": "1.98.1",
 "electron": "34.2.0",
 "node": "v20.18.2"
 },
 "system": {
 "date": "2025-03-27T16:01:24.933Z",
 "vscodeRoot": "c:\Program Files\Microsoft VS Code\resources\app",
 "nrfConnectForDesktopInstalled": true,
 "vscodeUptime": "80:07:06",
 "osUptime": "80:10:57",
 "cpu": "11th Gen Intel(R) Core(TM) i5-11400H @ 2.70GHz"
 },
 "workspace": {
 "name": "Untitled (Workspace)",
 "workspaceFile": "1714068093748",
 "folders": [
 "c:\Users\gilles.devillers.SECTRONIC\aerobox",
 "c:\Users\gilles.devillers.SECTRONIC\https_client_new",
 "c:\Users\gilles.devillers.SECTRONIC\hci_lpuart_new",
 "c:\Users\gilles.devillers.SECTRONIC\lte_ble_gateway",
 "c:\Users\gilles.devillers.SECTRONIC\peripheral",
 "c:\Users\gilles.devillers.SECTRONIC\aws_iot",
 "c:\Users\gilles.devillers.SECTRONIC\at_client"
 ]
 },
 "sdks": [
 {
 "version": "v2.9.0",
 "path": "c:\ncs\v2.9.0"
 },
 {
 "version": "v2.7.0",
 "path": "c:\ncs\v2.7.0_new"
 },
 {
 "version": "v2.6.1",
 "path": "c:\ncs\v2.6.1"
 },
 {
 "version": "v2.5.99-dev1",
 "path": "c:\ncs\v2.5.99-dev1"
 },
 {
 "version": "v2.5.2",
 "path": "c:\ncs\v2.5.2"
 },
 {
 "version": "v2.5.1",
 "path": "c:\ncs\v2.5.1"
 },
 {
 "version": "v2.5.0",
 "path": "c:\ncs\v2.5.0"
 },
 {
 "version": "v4.1.99",
 "path": "c:\Users\gilles.devillers.SECTRONIC"
 },
 {
 "version": "v3.7.0-rc2",
 "path": "c:\Users\gilles.devillers.SECTRONIC\zephyrproject"
 },
 {
 "version": "v3.6.99",
 "path": "c:\ncs\v2.7.0"
 }
 ],
 "activeBuild": "c:\Users\gilles.devillers.SECTRONIC\peripheral\build_aerobox\mcuboot",
 "apps": [
 {
 "workspace": "c:\Users\gilles.devillers.SECTRONIC\aerobox",
 "uri": "c:\Users\gilles.devillers.SECTRONIC\aerobox",
 "buildConfigurations": []
 },
 {
 "workspace": "c:\Users\gilles.devillers.SECTRONIC\at_client",
 "uri": "c:\Users\gilles.devillers.SECTRONIC\at_client",
 "buildConfigurations": [
 {
 "id": "c:\Users\gilles.devillers.SECTRONIC\at_client\build",
 "name": "build",
 "boardId": "nrf9160dk@0.14.0/nrf9160/ns",
 "type": "Sysbuild",
 "isChild": false,
 "isStale": false,
 "taskBindings": {
 "build": [],
 "pristineBuild": [],
 "flash": [],
 "eraseAndFlash": []
 },
 "sdk": "c:\ncs\v2.9.0",
 "toolchain": "nRF Connect SDK Toolchain v2.9.0"
 }
 ]
 },
 {
 "workspace": "c:\Users\gilles.devillers.SECTRONIC\aws_iot",
 "uri": "c:\Users\gilles.devillers.SECTRONIC\aws_iot",
 "buildConfigurations": [
 {
 "id": "c:\Users\gilles.devillers.SECTRONIC\aws_iot\build",
 "name": "build",
 "boardId": "nrf9160dk@0.14.0/nrf9160/ns",
 "type": "Sysbuild",
 "isChild": false,
 "isStale": false,
 "taskBindings": {
 "build": [],
 "pristineBuild": [],
 "flash": [],
 "eraseAndFlash": []
 },
 "sdk": "c:\ncs\v2.9.0",
 "toolchain": "nRF Connect SDK Toolchain v2.9.0"
 }
 ]
 },
 {
 "workspace": "c:\Users\gilles.devillers.SECTRONIC\hci_lpuart_new",
 "uri": "c:\Users\gilles.devillers.SECTRONIC\hci_lpuart_new",
 "buildConfigurations": [
 {
 "id": "c:\Users\gilles.devillers.SECTRONIC\hci_lpuart_new\build",
 "name": "build",
 "boardId": "nrf9160dk_nrf52840",
 "type": "Zephyr",
 "isChild": false,
 "isStale": false,
 "taskBindings": {
 "build": [],
 "pristineBuild": [],
 "flash": [],
 "eraseAndFlash": []
 },
 "sdk": "c:\ncs\v2.6.1",
 "toolchain": "nRF Connect SDK Toolchain v2.6.1"
 },
 {
 "id": "c:\Users\gilles.devillers.SECTRONIC\hci_lpuart_new\build_aerobox",
 "name": "build_aerobox",
 "boardId": "aerobox_nrf52",
 "type": "Zephyr",
 "isChild": false,
 "isStale": false,
 "taskBindings": {
 "build": [],
 "pristineBuild": [],
 "flash": [],
 "eraseAndFlash": []
 },
 "sdk": "c:\ncs\v2.6.1",
 "toolchain": "nRF Connect SDK Toolchain v2.6.1"
 },
 {
 "id": "c:\Users\gilles.devillers.SECTRONIC\hci_lpuart_new\build_aerobox_debug",
 "name": "build_aerobox_debug",
 "boardId": "aerobox_nrf52",
 "type": "Zephyr",
 "isChild": false,
 "isStale": false,
 "taskBindings": {
 "build": [],
 "pristineBuild": [],
 "flash": [],
 "eraseAndFlash": []
 },
 "sdk": "c:\ncs\v2.6.1",
 "toolchain": "nRF Connect SDK Toolchain v2.6.1"
 },
 {
 "id": "c:\Users\gilles.devillers.SECTRONIC\hci_lpuart_new\build_debug",
 "name": "build_debug",
 "boardId": "nrf9160dk_nrf52840",
 "type": "Zephyr",
 "isChild": false,
 "isStale": false,
 "taskBindings": {
 "build": [],
 "pristineBuild": [],
 "flash": [],
 "eraseAndFlash": []
 },
 "sdk": "c:\ncs\v2.6.1",
 "toolchain": "nRF Connect SDK Toolchain v2.6.1"
 }
 ]
 },
 {
 "workspace": "c:\Users\gilles.devillers.SECTRONIC\https_client_new",
 "uri": "c:\Users\gilles.devillers.SECTRONIC\https_client_new",
 "buildConfigurations": [
 {
 "id": "c:\Users\gilles.devillers.SECTRONIC\https_client_new\build",
 "name": "build",
 "boardId": "nrf9160dk_nrf9160_ns",
 "type": "Zephyr",
 "isChild": false,
 "isStale": false,
 "taskBindings": {
 "build": [],
 "pristineBuild": [],
 "flash": [],
 "eraseAndFlash": []
 },
 "sdk": "c:\ncs\v2.6.1",
 "toolchain": "nRF Connect SDK Toolchain v2.6.1"
 },
 {
 "id": "c:\Users\gilles.devillers.SECTRONIC\https_client_new\build_mbedtls",
 "name": "build_mbedtls",
 "boardId": "nrf9160dk_nrf9160_ns",
 "type": "Zephyr",
 "isChild": false,
 "isStale": false,
 "taskBindings": {
 "build": [],
 "pristineBuild": [],
 "flash": [],
 "eraseAndFlash": []
 },
 "sdk": "c:\ncs\v2.6.1",
 "toolchain": "nRF Connect SDK Toolchain v2.6.1"
 }
 ]
 },
 {
 "workspace": "c:\Users\gilles.devillers.SECTRONIC\lte_ble_gateway",
 "uri": "c:\Users\gilles.devillers.SECTRONIC\lte_ble_gateway",
 "buildConfigurations": [
 {
 "id": "c:\Users\gilles.devillers.SECTRONIC\lte_ble_gateway\build",
 "name": "build",
 "boardId": "nrf9160dk_nrf9160_ns",
 "type": "Zephyr",
 "isChild": false,
 "isStale": false,
 "taskBindings": {
 "build": [],
 "pristineBuild": [],
 "flash": [],
 "eraseAndFlash": []
 },
 "sdk": "c:\ncs\v2.6.1",
 "toolchain": "nRF Connect SDK Toolchain v2.6.1"
 }
 ]
 },
 {
 "workspace": "c:\Users\gilles.devillers.SECTRONIC\peripheral",
 "uri": "c:\Users\gilles.devillers.SECTRONIC\peripheral",
 "buildConfigurations": [
 {
 "id": "c:\Users\gilles.devillers.SECTRONIC\peripheral\build",
 "name": "build",
 "boardId": "nrf9160dk_nrf9160_ns",
 "type": "Zephyr",
 "isChild": false,
 "isStale": false,
 "taskBindings": {
 "build": [],
 "pristineBuild": [],
 "flash": [],
 "eraseAndFlash": []
 },
 "sdk": "c:\ncs\v2.6.1",
 "toolchain": "nRF Connect SDK Toolchain v2.6.1"
 },
 {
 "id": "c:\Users\gilles.devillers.SECTRONIC\peripheral\build_aerobox",
 "name": "build_aerobox",
 "boardId": "aerobox_ns",
 "type": "Zephyr",
 "isChild": false,
 "isStale": false,
 "taskBindings": {
 "build": [],
 "pristineBuild": [],
 "flash": [],
 "eraseAndFlash": []
 },
 "sdk": "c:\ncs\v2.6.1",
 "toolchain": "nRF Connect SDK Toolchain v2.6.1"
 },
 {
 "id": "c:\Users\gilles.devillers.SECTRONIC\peripheral\build_aerobox_debug",
 "name": "build_aerobox_debug",
 "boardId": "aerobox_ns",
 "type": "Zephyr",
 "isChild": false,
 "isStale": false,
 "taskBindings": {
 "build": [],
 "pristineBuild": [],
 "flash": [],
 "eraseAndFlash": []
 },
 "sdk": "c:\ncs\v2.6.1",
 "toolchain": "nRF Connect SDK Toolchain v2.6.1"
 },
 {
 "id": "c:\Users\gilles.devillers.SECTRONIC\peripheral\build_debug",
 "name": "build_debug",
 "boardId": "nrf9160dk_nrf9160_ns",
 "type": "Zephyr",
 "isChild": false,
 "isStale": false,
 "taskBindings": {
 "build": [],
 "pristineBuild": [],
 "flash": [],
 "eraseAndFlash": []
 },
 "sdk": "c:\ncs\v2.6.1",
 "toolchain": "nRF Connect SDK Toolchain v2.6.1"
 }
 ]
 }
 ],
 "toolchains": [
 {
 "version": "2.9.0",
 "path": "c:\ncs\toolchains\b620d30767"
 },
 {
 "version": "2.7.0",
 "path": "c:\ncs\toolchains\ce3b5ff664"
 },
 {
 "version": "2.6.1",
 "path": "c:\ncs\toolchains\cf2149caf2"
 },
 {
 "version": "2.5.2",
 "path": "c:\ncs\toolchains\c57af46cb7"
 },
 {
 "version": "2.5.1",
 "path": "c:\ncs\toolchains\c57af46cb7"
 },
 {
 "version": "2.5.0",
 "path": "c:\ncs\toolchains\c57af46cb7"
 },
 {
 "version": "0.16.5",
 "path": "c:\Users\gilles.devillers.SECTRONIC\zephyr-sdk-0.16.5"
 }
 ],
 "connectedDevices": [],
 "tools": {
 "C:\ncs\toolchains\b620d30767\opt\zephyr-sdk\arm-zephyr-eabi\bin\arm-zephyr-eabi-gcc.exe": "0.17.0",
 "C:\Program Files\SEGGER\JLink_V794i\JLink.exe": "7.94i",
 "C:\Program Files\Nordic Semiconductor\nrf-command-line-tools\bin\nrfjprog.exe": "10.23.2",
 "C:\ncs\toolchains\b620d30767\opt\bin\Scripts\nrfutil.exe": "7.12.0",
 "C:\ncs\toolchains\b620d30767\cmake": "3.21.0",
 "C:\ncs\toolchains\b620d30767\opt\bin\Scripts\west.exe": "1.2.0",
 "C:\ncs\toolchains\b620d30767\opt\bin\python.exe": "3.12.4",
 "C:\ncs\toolchains\b620d30767\opt\bin\ninja.exe": "1.10.2",
 "C:\ncs\toolchains\b620d30767\opt\bin\gperf.exe": "3.1",
 "C:\ncs\toolchains\b620d30767\opt\bin\dtc.exe": "1.4.7",
 "C:\ncs\toolchains\b620d30767\opt\bin\gn.exe": "2202",
 "C:\ncs\toolchains\b620d30767\mingw64\bin\git.exe": "2.37.3.windows.1",
 "arm-gdbPath": "c:\ncs\toolchains\b620d30767\opt\zephyr-sdk\arm-zephyr-eabi\bin\arm-zephyr-eabi-gdb.exe",
 "riscv-gdbPath": "C:\ncs\toolchains\b620d30767\opt\zephyr-sdk\riscv64-zephyr-elf\bin\riscv64-zephyr-elf-gdb.exe"
 },
 "nrfutil": {
 "nrfutil-device": {
 "version": "2.7.9",
 "binPath": "c:\Users\gilles.devillers.SECTRONIC\.vscode\extensions\nordic-semiconductor.nrf-connect-2025.1.127-win32-x64\platform\nrfutil\bin\nrfutil-device",
 "jlinkInfo": {
 "name": "JlinkARM",
 "version": "JLink_V7.94i",
 "versionFormat": "string"
 }
 },
 "nrfutil-toolchain-manager": {
 "version": "0.14.4",
 "binPath": "c:\Users\gilles.devillers.SECTRONIC\.vscode\extensions\nordic-semiconductor.nrf-connect-2025.1.127-win32-x64\platform\nrfutil\bin\nrfutil-toolchain-manager"
 }
 },
 "environment": {
 "westEnv": {
 "HOME": "C:\Users\gilles.devillers.SECTRONIC",
 "HOMEDRIVE": "C:",
 "HOMEPATH": "\Users\gilles.devillers.SECTRONIC",
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 "PYTHONPATH": "C:\ncs\toolchains\b620d30767\opt\bin;C:\ncs\toolchains\b620d30767\opt\bin\Lib;C:\ncs\toolchains\b620d30767\opt\bin\Lib\site-packages"
 },
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 }
 },
 "terminal": {
 "defaultProfile": null
 },
 "config": {
 "nordic-semiconductor.nrf-connect": {
 "topdir": "${nrf-connect.sdk:2.7.0}",
 "toolchain": {
 "path": "${nrf-connect.toolchain:2.7.0}"
 },
 "ozonePath": "",
 "applications": [],
 "applicationOptions": {},
 "kconfig": {
 "interface": "kconfig"
 },
 "west": {
 "env": {
 "$base": "terminal"
 }
 },
 "boardRoots": [],
 "taskBindings": {},
 "buildTerminal": {
 "condensedProgress": true
 },
 "debugging": {
 "flash": true,
 "bindings": {},
 "justMyCode": false
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 "activeAppFollowActiveEditor": true,
 "flash": {
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 "erase": false,
 "recover": false
 },
 "enableTelemetry": false,
 "thirdpartyIntegration": {},
 "toolchainManager": {
 "indexURL": null,
 "installDirectory": null
 },
 "nrfutil": {
 "home": null
 },
 "defaultOpenAction": "ask",
 "terminalProfile": {
 "shell": null
 }
 },
 "nordic-semiconductor.nrf-terminal": {
 "terminalMode": "character"
 }
 },
 "extensions": {
 "internal": {
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 "version": "2025.1.127",
 "path": "c:\Users\gilles.devillers.SECTRONIC\.vscode\extensions\nordic-semiconductor.nrf-connect-2025.1.127-win32-x64",
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 How can I repair my development environment so that the VSCode extension properly shows all my installed SDKs? 
 Thanks.

GilDev · Accepted Answer

After numerous attempts, it seems that deleting everything (including that snarkly .west directory) and reinstalling the SDK (while removing the more recent toolchain) helped. I successfully managed to build my project again. Not putting projects at the same root level, as dejans said, is mandatory. Thanks for the help!