Failed to update web app settings: Number of Web workers must be greater than zero

TechnoPy 0

Hello,

I am trying to update FTP state to FTP Only under Settings = Configurations. Getting error as 'Failed to update web app settings: Number of Web workers must be greater than zero.

User's image

I even increased the instance and still this didn't worked.

VenkateshDodda-MSFT 22,156 Reputation points Microsoft Employee

2024-11-13T09:14:14.8333333+00:00
@TechnoPy Thank you for reaching out to Microsoft Q&A.

From the overview page of the app service can you check on how many instances that this app service is running on?

Have configured any health check in app service? if yes, can you check the status of those instances?

If you see those instances with status rather healthy, I suggest you disable the health check first, try updating the app setting and then re-enable the health check feature.

Also, can you try updating the setting using either PowerShell or AZ CLI cmdlets or REST API and let us know if you are still facing the issue.
VenkateshDodda-MSFT 22,156 Reputation points Microsoft Employee

2024-11-14T06:17:02.9366667+00:00

@TechnoPy Following up to see if you have a chance to check my previous response and helped. Do let me know if you have any further questions on this.
TechnoPy 0 Reputation points

2024-11-18T08:11:20.8166667+00:00

Hello @VenkateshDodda-MSFT

Thank you for your reply, What I see on overview is the app service is running on 5 instance and I have not configured any health check.
Can you please help how can I update using powershell & AZI
VenkateshDodda-MSFT 22,156 Reputation points Microsoft Employee

2024-11-18T13:56:20.59+00:00
@TechnoPy Thanks for your response, did you get any chance to check the earlier share documents on how to enable FTP state using Power Shell or through Rest API.

PowerShell : https://learn.microsoft.com/en-us/azure/app-service/deploy-ftp?tabs=powershell#enforce-ftps

Through Rest API : https://learn.microsoft.com/en-us/rest/api/appservice/web-apps/update-ftp-allowed?view=rest-appservice-2024-04-01&tabs=HTTP
VenkateshDodda-MSFT 22,156 Reputation points Microsoft Employee

2024-11-22T04:16:17.13+00:00

@TechnoPy Following up to see if you have a chance to check my previous response and helped. Do let me know if you have any further questions on this.

1 answer

Pinaki Ghatak 5,230 Reputation points Microsoft Employee

2024-11-13T18:51:43.11+00:00
Hello @TechnoPy This error message indicates that the number of web workers for your app service plan is set to zero, which is not allowed.

To resolve this issue, you need to increase the number of web workers for your app service plan. Can you please confirm if you have increased the number of web workers as well?

You can increase the number of web workers by following these steps:

Go to the Azure portal and navigate to your app service plan.

Under the "Settings" section, click on "Scale up (App Service plan)".

In the "Scale up" blade, select the appropriate pricing tier that supports multiple instances and set the number of instances to at least 1.

Under "Instance details", set the number of web workers to at least 1.

Click on "Apply" to save the changes. Once you have increased the number of web workers, try updating the FTP state to FTP Only again and see if the issue is resolved.

I hope that this response has addressed your query and helped you overcome your challenges. If so, please mark this response as Answered. This will not only acknowledge our efforts, but also assist other community members who may be looking for similar solutions.
Please sign in to rate this answer.

0 comments No comments
Sign in to comment

Use comments to ask for clarification, additional information, or improvements to the question.

Share via

Failed to update web app settings: Number of Web workers must be greater than zero

1 answer

Your answer