Hosted Agent with Azure-cli 2.77: ERROR: The specified blob already exists

Question

Hosted Agent with Azure-cli 2.77: ERROR: The specified blob already exists

Angelina Souy 40

Since Tuesday, the Hosted Agent updated the version of azure-cli to 2.77 and I get this error since then:

ERROR: The specified blob already exists.
RequestId:162e9f38-701e-004e-1b60-215d8e000000
Time:2025-09-09T08:06:02.3395538Z
ErrorCode:BlobAlreadyExists

Here the the failing command that was working:

az batch application package create --application-name ${{parameters.applicationName}} --name ${{parameters.batchName}} --package-file "$(Pipeline.Workspace)/drop/${{parameters.projectName}}.zip" --resource-group ${{parameters.resourceGroup}} --version-name mojito-${{ lower(parameters.environment) }}

I changed my command to create a new version each time, but now, the uploaded application zip file is only containing the zip path instead of the whole file!

D:\a\1\drop\MojitoUpload.zip

There is a huge regression on azure-cli 2.77, please fix this as soon as possible.

Himanshu Shekhar 1,170 Reputation points Microsoft External Staff Moderator

2025-09-11T15:56:21.52+00:00
Hello Angelina Souy

Welcome to Microsoft Q&A Platform. Thank you for reaching out & hope you are doing well.

Are you using the Hosted Agent with Azure CLI 2.77 specifically, or did you upgrade from a previous version?

Can you confirm the exact Azure CLI version with az --version?

Have you tried downgrading to Azure CLI 2.76 to see if the issue persists?

Are you attempting to upload an application package with a version name that already exists in the Azure Batch account, and have you tried using a unique version name or incrementing it each time?

Is there any automation pipeline that deletes or overwrites existing blobs, or is the upload command missing an explicit overwrite flag/parameter?

Have you confirmed that the ZIP file being uploaded is correctly generated and contains the full application, not just a path or placeholder, by checking its contents and size before the upload?

Regards

Himanshu

Answer accepted by question author

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Himanshu Shekhar 1,170 Reputation points Microsoft External Staff Moderator

2025-09-11T15:56:21.52+00:00

Hello Angelina Souy

Welcome to Microsoft Q&A Platform. Thank you for reaching out & hope you are doing well.

Are you using the Hosted Agent with Azure CLI 2.77 specifically, or did you upgrade from a previous version?

Can you confirm the exact Azure CLI version with az --version?

Have you tried downgrading to Azure CLI 2.76 to see if the issue persists?

Are you attempting to upload an application package with a version name that already exists in the Azure Batch account, and have you tried using a unique version name or incrementing it each time?

Is there any automation pipeline that deletes or overwrites existing blobs, or is the upload command missing an explicit overwrite flag/parameter?

Have you confirmed that the ZIP file being uploaded is correctly generated and contains the full application, not just a path or placeholder, by checking its contents and size before the upload?

Regards

Himanshu

Answer 1

Hi Angelina Souy,

Thanks for bringing your issue. This issue you are facing is due to a regression introduced in Azure CLI version 2.77, specifically affecting the az batch application package create command.

In this version, when executing the command, it tries to upload the application package blob but does not handle existing blobs correctly. Even when providing a new version name, instead of uploading the actual zip file content, it mistakenly uploads just the file path as a string rather than the file itself.

I have found that this regression issue tracked in Azure CLI GitHub repository three days ago.

https://github.com/Azure/azure-cli/issues/32086

As a workaround we recommend you to:

Use Azure REST API or the Azure Batch SDK to upload application packages.

Use an older Azure CLI version (e.g., 2.76) where this command works as expected.

Please refer official release notes of Azure CLI version 2.77 September version: https://free.blessedness.top/en-us/cli/azure/release-notes-azure-cli?view=azure-cli-latest

Please let me know if you have any other queries.

If the answer is helpful, please click "Accept Answer" and "Upvote it."

Answer 2

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Hosted Agent with Azure-cli 2.77: ERROR: The specified blob already exists

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