VS Code SDK install failure

RE: VS Code SDK install failure

Nissanth — Wed, 26 Aug 2026 11:09:39 GMT

Hi David,

I have noticed that you have been using two different toolchains. If you are building with nRF Connect SDK v3.3.0, the toolchain with the hash 936afb6332 is the correct one. The one you used earlier (dcbdc366a1) belongs to v3.4.0.

I am currently trying to reproduce the error on my end. In the meantime, could you check the build output in the nRF Connect terminal? Specifically, I would like to know whether you see a line beginning with "CMake Error at" and a "Call Stack (most recent call first):" block above the two lines you sent me. The image below shows what this looks like on my setup.

Regards,
Nissanth Karunanithy

RE: VS Code SDK install failure

RFLABS — Tue, 25 Aug 2026 19:01:15 GMT

I found an issue with the build conf. Fixed it, but still getting this error:

C:/ncs/v3.3.0/zephyr/share/sysbuild-package/cmake/SysbuildConfig.cmake:8 (include)
template/CMakeLists.txt:10 (find_package)

-- Configuring incomplete, errors occurred!
FATAL ERROR: command exited with status 1: 'C:\ncs\toolchains\936afb6332\opt\bin\cmake.EXE' -DWEST_PYTHON=C:/ncs/toolchains/936afb6332/opt/bin/python.exe '-Bd:\Active\firealarm\firealarm\build_1' -GNinja -DBOARD=nrf54lm20dk/nrf54lm20b/cpuapp -DCONFIG_DEBUG_THREAD_INFO=y '-SC:\ncs\v3.3.0\zephyr\share\sysbuild'

RE: VS Code SDK install failure

RFLABS — Tue, 25 Aug 2026 18:47:51 GMT

The only message I have is the one saying: "Unable to build: SDK not found. Ensure that a valid SDK is used for the build configuration." I do not see any other logs. Please advise.

RE: VS Code SDK install failure

Nissanth — Tue, 25 Aug 2026 06:47:20 GMT

Hi David,

Could you send me the full log leading up to the crash, everything before the error message "Unable to build: SDK not found. Ensure that a valid SDK is used for the build configuration."? The log may show which path is being used, which would help me debug the problem.

Thanks,
Nissanth Karunanithy

RE: VS Code SDK install failure

RFLABS — Mon, 24 Aug 2026 22:36:07 GMT

Please advise next steps.

RE: VS Code SDK install failure

RFLABS — Mon, 24 Aug 2026 19:34:37 GMT

I reinstalled the in drive C: instead of D: and it did confirm that it successfully installed. After closing and reopening VS Code, I am still getting this message.

"Unable to build: SDK not found. Ensure that a valid SDK is used for the build configuration."

RE: VS Code SDK install failure

RFLABS — Mon, 24 Aug 2026 13:19:38 GMT

I have installed the toolchain on D: and attempted to install the SDK on D: as well

RE: VS Code SDK install failure

Nissanth — Mon, 24 Aug 2026 09:26:35 GMT

Hi David,

I noticed that the SDK and toolchain are installed on different drives. The SDK appears to be on d:\ drive, and the toolchain on C:\ drive. Could you confirm whether you have a d:\ drive at all? Could you reinstall both the SDK and toolchain under the same root directory to see whether that resolves the issue?

Regards,
Nissanth Karunanithy

RE: VS Code SDK install failure

navigator — Fri, 21 Aug 2026 17:18:53 GMT

Same error code for me. Fresh install on Windows 11. Installed vscode, then tried to install nRF Connect SDK.

Output below:

[14:02:06] nrfutil-sdk-manager install v3.4.0 --sdk-path c:\ncs\v3.4.0 --type nrf: Checking downloads for v3.4.0
[14:02:06] nrfutil-sdk-manager install v3.4.0 --sdk-path c:\ncs\v3.4.0 --type nrf: Download toolchain v3.4.0
[14:06:00] nrfutil-sdk-manager install v3.4.0 --sdk-path c:\ncs\v3.4.0 --type nrf: Toolchain downloaded: success
[14:06:00] nrfutil-sdk-manager install v3.4.0 --sdk-path c:\ncs\v3.4.0 --type nrf: Unpack toolchain v3.4.0
[14:06:40] nrfutil-sdk-manager install v3.4.0 --sdk-path c:\ncs\v3.4.0 --type nrf: Toolchain unpacked to C:\ncs\tmp\.tmp8ZRnIk: success
[14:06:40] nrfutil-sdk-manager install v3.4.0 --sdk-path c:\ncs\v3.4.0 --type nrf: Install toolchain v3.4.0
[14:06:40] nrfutil-sdk-manager install v3.4.0 --sdk-path c:\ncs\v3.4.0 --type nrf: Toolchain installed at C:\ncs\toolchains\dcbdc366a1: success
[14:06:40] nrfutil-sdk-manager install v3.4.0 --sdk-path c:\ncs\v3.4.0 --type nrf: Download SDK v3.4.0
[14:17:30] nrfutil-sdk-manager install v3.4.0 --sdk-path c:\ncs\v3.4.0 --type nrf: Result: success
[14:17:30] nrfutil-sdk-manager install v3.4.0 --sdk-path c:\ncs\v3.4.0 --type nrf: Calculating SDK checksum
[14:17:34] nrfutil-sdk-manager install v3.4.0 --sdk-path c:\ncs\v3.4.0 --type nrf: Verified download: success
[14:17:34] nrfutil-sdk-manager install v3.4.0 --sdk-path c:\ncs\v3.4.0 --type nrf: Unpack SDK v3.4.0
[14:19:48] nrfutil-sdk-manager install v3.4.0 --sdk-path c:\ncs\v3.4.0 --type nrf: Unpacked SDK tarball: success
 
[west]: exited with code -4058.
 
Failed to register SDK installation: west failed with code -4058 (cmd 'west zephyr-export) (cwd 'c:\ncs\v3.4.0'):
The SDK will not be detected by VSCode before the CMake Package Registry is corrected for the Zephyr package: c:\ncs\v3.4.0