When publish on synapse workspace, Publishing completed, but failed to generate the arm templates, saying Browser HTTP transport failure

Question

When publish on synapse workspace, Publishing completed, but failed to generate the arm templates, saying Browser HTTP transport failure

Kiyoung Yang 0 Microsoft Employee

When publish on synapse workspace, Publishing completed, but failed to generate the arm templates, saying Browser HTTP transport failure. how to resolve this issue?

SAI JAGADEESH KUDIPUDI 1,825 Reputation points Microsoft External Staff Moderator

2026-03-20T04:13:52.16+00:00

Hi Kiyoung Yang,
In Azure Synapse Studio with Git integration, Publish and ARM template generation are two separate stages. The Publish stage can complete successfully, while ARM template generation may fail with a “Browser HTTP transport failure” due to browser/network issues, Git push authorization errors, or service limits (for example, ARM template size exceeding 20 MB or parameter count limits). This issue is not caused by Synapse artifacts themselves. As per Microsoft guidance, capture HAR (browser network) traces and Session ID for troubleshooting, or use automated CI/CD publish (Validate & Deploy) as a workaround.

Microsoft reference:
CI/CD and workspace deployment overview
SAI JAGADEESH KUDIPUDI 1,825 Reputation points Microsoft External Staff Moderator

2026-03-31T16:00:31.8433333+00:00

Hi Kiyoung Yang,
I hope you had a chance to review the information shared earlier, and I hope this information has been helpful! If you still have questions, please let us know what is needed in the comments so the question can be answered.

1 answer

Your answer

SAI JAGADEESH KUDIPUDI 1,825 Reputation points Microsoft External Staff Moderator

2026-03-20T04:13:52.16+00:00

Hi Kiyoung Yang,
In Azure Synapse Studio with Git integration, Publish and ARM template generation are two separate stages. The Publish stage can complete successfully, while ARM template generation may fail with a “Browser HTTP transport failure” due to browser/network issues, Git push authorization errors, or service limits (for example, ARM template size exceeding 20 MB or parameter count limits). This issue is not caused by Synapse artifacts themselves. As per Microsoft guidance, capture HAR (browser network) traces and Session ID for troubleshooting, or use automated CI/CD publish (Validate & Deploy) as a workaround.

Microsoft reference:
CI/CD and workspace deployment overview
SAI JAGADEESH KUDIPUDI 1,825 Reputation points Microsoft External Staff Moderator

2026-03-31T16:00:31.8433333+00:00

Hi Kiyoung Yang,
I hope you had a chance to review the information shared earlier, and I hope this information has been helpful! If you still have questions, please let us know what is needed in the comments so the question can be answered.

Answer 1

Hello Kiyoung Yang,

Welcome to the Microsoft Q&A and thank you for posting your questions here.

I understand that when publish on synapse workspace, Publishing completed, but failed to generate the arm templates, saying Browser HTTP transport failure.

If Publish shows “completed” but ARM templates aren’t produced, first refresh/re‑authenticate Synapse Studio and retry—token expiry after idle is a documented publish failure mode in Synapse Studio troubleshooting. Synapse Studio troubleshooting
Open Manage > Git configuration and confirm repo, collaboration branch, and that the publish branch is correct (Synapse default: workspace_publish). If you use a custom publish branch, add publish_config.json in the collaboration branch: {"publishBranch":"your-branch"}. Source control in Synapse · ADF source control (same mechanics)
Ensure your identity (or service account) can push to the publish branch and isn’t blocked by branch policies (required reviewers, no‑push rules). Publishing must be able to commit the generated templates to that branch. Source control in Synapse
Adopt Azure DevOps “Synapse Workspace Deployment” task V2 with Validate and deploy to generate + deploy directly from any branch, bypassing Studio’s publish‑to‑Git step and avoiding browser/network fragility; this is the Microsoft‑endorsed automation pattern for Synapse CI/CD. Tech Community blog (Task V2 & Validate/Deploy) · Synapse CI/CD (Learn)
If template generation pushes too much metadata (or you hit limits), parameterize only what you need via arm-template-parameters-definition.json to reduce size and complexity; this is supported for Synapse & ADF. Example strategy: remove low‑variance properties and consolidate values via global params. Custom ARM parameterization
Final snap‑check (1) Refresh Studio and re‑publish. (2) Confirm Git config + publish_config.json (if custom branch) and push rights to publish branch. (3) If you need zero‑touch reliability, switch to Task V2 “Validate and deploy.” Synapse troubleshooting · Synapse source control · Synapse CI/CD · Validate/Deploy blog

I hope this is helpful! Do not hesitate to let me know if you have any other questions or clarifications.

Please don't forget to close up the thread here by upvoting and accept it as an answer if it is helpful.

Share via

When publish on synapse workspace, Publishing completed, but failed to generate the arm templates, saying Browser HTTP transport failure

1 answer

Your answer