Oryx build fails only supporting Python 3.10.x

[ct-prog]

Bug Report

• At what date and time did you most recently experience the problem?
  Most recently happened on 2026/03/30 07:52 UTC

• Where did you experience the problem? E.g. Azure Web Apps, Azure Functions, Azure Container Registry, or offline use.
  Azure functions remote build

• If your repo is publicly available please share its URL:
  No.

• What happened?
  Oryx build for Python version 3.13 has worked for months, but now I am getting a failed remote build for Azure Functions with Oryx stating that only Python 3.10.x is supported.

• What did you expect or want to happen?
  I expected Oryx build on Azure to support platform version Python 3.13.

• How can we reproduce it?
  Try deploying an azure function app using oryx build for python 3.13
  func azure functionapp publish insert-function-app-name

• Do you have log output? Please include between the backticks:

Resolving worker runtime to 'python'.
Getting site publishing info...
[2026-03-30T07:51:22.580Z] Starting the function app deployment...
Creating archive for current directory...
Performing remote build for functions project.
Deleting the old .python_packages directory
Uploading 186.09 KB [#############################################################################]
Remote build in progress, please wait...
Updating submodules.
Preparing deployment for commit id '033a582f-d'.
PreDeployment: context.CleanOutputPath False
PreDeployment: context.OutputPath /home/site/wwwroot
Repository path is /tmp/zipdeploy/extracted
Running oryx build...
Command: oryx build /tmp/zipdeploy/extracted -o /tmp/build/expressbuild --platform python --platform-version 3.13 -i /tmp/8de8e31265afc0a -p packagedir=.python_packages/lib/site-packages
Operation performed by Microsoft Oryx, https://github.com/Microsoft/Oryx
You can report issues at https://github.com/Microsoft/Oryx/issues

Oryx Version: 0.2.20260204.1+0fdbe200b286be083841ff7fa201c6c2316dc6b9, Commit: 0fdbe200b286be083841ff7fa201c6c2316dc6b9, ReleaseTagName: 20260204.1

Build Operation ID: e50989f6a9bb3c8a
Repository Commit : 033a582f-d111-48a8-8bce-59878209db9b
OS Type           : bullseye
Image Type        : githubactions

Primary SDK Storage URL: https://oryx-cdn.microsoft.io
Backup SDK Storage URL: 
Detecting platforms...
External SDK provider is enabled.
Requesting metadata for platform python from external SDK provider
Requesting metadata for platform python from external SDK provider
Error: Platform 'python' version '3.13' is unsupported. Supported versions: 3.10.0, 3.10.0a2, 3.10.13, 3.10.14, 3.10.15, 3.10.16, 3.10.17, 3.10.18, 3.10.19
Error: Platform 'python' version '3.13' is unsupported. Supported versions: 3.10.0, 3.10.0a2, 3.10.13, 3.10.14, 3.10.15, 3.10.16, 3.10.17, 3.10.18, 3.10.19\n/opt/Kudu/Scripts/starter.sh oryx build /tmp/zipdeploy/extracted -o /tmp/build/expressbuild --platform python --platform-version 3.13 -i /tmp/8de8e31265afc0a -p packagedir=.python_packages/lib/site-packages

Generating summary of Oryx build
Deployment Log file does not exist in /tmp/oryx-build.log
The logfile at /tmp/oryx-build.log is empty. Unable to fetch the summary of build
Deployment Failed. deployer = Push-Deployer deploymentPath = Functions App ZipDeploy. Extract zip. Remote build.
Remote build failed!

[chauek]

I have the same issue when trying to build with 3.11:

Error: Platform 'python' version '3.11' is unsupported. Supported versions: 3.10.0, 3.10.0a2, 3.10.13, 3.10.14, 3.10.15, 3.10.16, 3.10.17, 3.10.18, 3.10.19
Error: Platform 'python' version '3.11' is unsupported. Supported versions: 3.10.0, 3.10.0a2, 3.10.13, 3.10.14, 3.10.15, 3.10.16, 3.10.17, 3.10.18, 3.10.19\n/opt/Kudu/Scripts/starter.sh oryx build /tmp/zipdeploy/extracted -o /tmp/build/expressbuild --platform python --platform-version 3.11 -i /tmp/8de8e33d9e972c3 -p packagedir=.python_packages/lib/site-packages

[memorisanka]

We are experiencing the same issue:

[selsel-crs]

Same issues
Error: Platform 'python' version '3.11' is unsupported. Supported versions: 3.10.0, 3.10.0a2, 3.10.13, 3.10.14, 3.10.15, 3.10.16, 3.10.17, 3.10.18, 3.10.19

Error: Platform 'python' version '3.11' is unsupported. Supported versions: 3.10.0, 3.10.0a2, 3.10.13, 3.10.14, 3.10.15, 3.10.16, 3.10.17, 3.10.18, 3.10.19\n/opt/Kudu/Scripts/starter.sh oryx build /tmp/zipdeploy/extracted -o /tmp/build/expressbuild --platform python --platform-version 3.11 -i /tmp/8de8e31e5752a26 -p packagedir=.python_packages/lib/site-packages

[frankwinfaber]

I have the same issue when trying to build with 3.12:

Error: Platform 'python' version '3.12' is unsupported. Supported versions: 3.10.0, 3.10.0a2, 3.10.13, 3.10.14, 3.10.15, 3.10.16, 3.10.17, 3.10.18, 3.10.19

Oryx Version: 0.2.20260204.1+0fdbe200b286be083841ff7fa201c6c2316dc6b9, Commit: 0fdbe20, ReleaseTagName: 20260204.1

Build Operation ID: cea0c992760d39fc
Repository Commit : 1ba11d8f-624d-490d-ab9f-cb60f2890b6f
OS Type : bullseye
Image Type : githubactions

Location: West Europe
App Service Plan: B1: 1
Operating System: Linux

[thamthang]

I have the same issue with python 3.11:

Running oryx build...
Command: oryx build /tmp/zipdeploy/extracted -o /tmp/build/expressbuild --platform python --platform-version 3.11 -i /tmp/8de8e36b3ad15a3 -p packagedir=.python_packages/lib/site-packages
Operation performed by Microsoft Oryx, https://github.com/Microsoft/Oryx
You can report issues at https://github.com/Microsoft/Oryx/issues

Oryx Version: 0.2.20260204.1+0fdbe200b286be083841ff7fa201c6c2316dc6b9, Commit: 0fdbe20, ReleaseTagName: 20260204.1

Build Operation ID: e5795be38ffac4c3
Repository Commit : a51374fe-88b9-4132-a475-bb7462761e14
OS Type : bullseye
Image Type : githubactions

Primary SDK Storage URL: https://oryx-cdn.microsoft.io
Backup SDK Storage URL:
Detecting platforms...
External SDK provider is enabled.
Requesting metadata for platform python from external SDK provider
Requesting metadata for platform python from external SDK provider
Error: Platform 'python' version '3.11' is unsupported. Supported versions: 3.10.0, 3.10.0a2, 3.10.13, 3.10.14, 3.10.15, 3.10.16, 3.10.17, 3.10.18, 3.10.19
Error: Platform 'python' version '3.11' is unsupported. Supported versions: 3.10.0, 3.10.0a2, 3.10.13, 3.10.14, 3.10.15, 3.10.16, 3.10.17, 3.10.18, 3.10.19\n/opt/Kudu/Scripts/starter.sh oryx build /tmp/zipdeploy/extracted -o /tmp/build/expressbuild --platform python --platform-version 3.11 -i /tmp/8de8e36b3ad15a3 -p packagedir=.python_packages/lib/site-packages

Generating summary of Oryx build
Deployment Log file does not exist in /tmp/oryx-build.log
The logfile at /tmp/oryx-build.log is empty. Unable to fetch the summary of build
Deployment Failed. deployer = Push-Deployer deploymentPath = Functions App ZipDeploy. Extract zip. Remote build.
Remote build failed!

[SvenNoir]

I have the same problem rn, the WebApp is on python 3.12

[saadalia]

I was able to temporarily mitigate the issue by using local build:

pip install -r requirements.txt --target=".python_packages/lib/site-packages"
func azure functionapp publish <Your-App-Name> --python --no-build

[jniemeyer-gasag]

Same Problem for me

[PowerSoftbi]

same problem. Was working till 10:36

[stokuri]

same issue:
{ "log_time": "2026-03-30T08:56:28.8249967Z", "id": "", "message": "Error: Platform 'python' version '3.12' is unsupported. Supported versions: 3.10.0, 3.10.0a2, 3.10.13, 3.10.14, 3.10.15, 3.10.16, 3.10.17, 3.10.18, 3.10.19", "type": 1, "details_url": null },

[yashgandhi-32]

Same issue

Seems vibe code is going to prod nowdays

[surenderssm]

We're actively investigating this as a priority and will post updates on this issue as we make progress.

[ManuVerl]

We have same trouble here, since today ...

[
{"log_time":"2026-03-30 ... "message":"Command: oryx build /tmp/zipdeploy/extracted -o /tmp/build/expressbuild --platform python --platform-version 3.11 -i /tmp/... -p packagedir=.python_packages/lib/site-packages","type":0,"details_url":null},
{"log_time":"2026-03-30 ... "message":"Operation performed by Microsoft Oryx, https://github.com/Microsoft/Oryx","type":0,"details_url":null},
{"log_time":"2026-03-30 ... "message":"You can report issues at https://github.com/Microsoft/Oryx/issues","type":0,"details_url":null},
...
{"log_time":"2026-03-30 ... "message":"Oryx Version: 0.2.20260204.1+0fdbe200b286be083841ff7fa201c6c2316dc6b9, Commit: 0fdbe200b286be083841ff7fa201c6c2316dc6b9, ReleaseTagName: 20260204.1","type":0,"details_url":null},
{"log_time":"2026-03-30 ... "message":"OS Type           : bullseye","type":0,"details_url":null},
{"log_time":"2026-03-30 ... "message":"Primary SDK Storage URL: https://oryx-cdn.microsoft.io","type":0,"details_url":null},
{"log_time":"2026-03-30 ... "message":"Backup SDK Storage URL: ","type":0,"details_url":null},
{"log_time":"2026-03-30 ... "message":"Detecting platforms...","type":0,"details_url":null},
{"log_time":"2026-03-30 ... "message":"External SDK provider is enabled.","type":0,"details_url":null},
{"log_time":"2026-03-30 ... "message":"Requesting metadata for platform python from external SDK provider","type":0,"details_url":null},
{"log_time":"2026-03-30 ... "message":"Requesting metadata for platform python from external SDK provider","type":0,"details_url":null},
{"log_time":"2026-03-30 ... "message":"Error: Platform 'python' version '3.11' is unsupported. Supported versions: 3.10.0, 3.10.0a2, 3.10.13, 3.10.14, 3.10.15, 3.10.16, 3.10.17, 3.10.18, 3.10.19","type":1,"details_url":null},
{"log_time":"2026-03-30 ... "message":"Error: Platform 'python' version '3.11' is unsupported. Supported versions: 3.10.0, 3.10.0a2, 3.10.13, 3.10.14, 3.10.15, 3.10.16, 3.10.17, 3.10.18, 3.10.19\\n/opt/Kudu/Scripts/starter.sh oryx build /tmp/zipdeploy/extracted -o /tmp/build/expressbuild --platform python --platform-version 3.11 -i /tmp/... -p packagedir=.python_packages/lib/site-packages","type":2,"details_url":null}
]