Azure Virtual Network
An Azure networking service that is used to provision private networks and optionally to connect to on-premises datacenters.
Cannot delete resource
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w c
0
Reputation points
The system shows:
Failed to delete virtual network
Failed to delete virtual network ''. Error: Subnet wingwebDbSubnet is in use by /subscriptions/ac69d7f8-f279-4939-8d60-f5d099037571/resourceGroups/wingweb_group/providers/Microsoft.Network/virtualNetworks/wingwebVnet/subnets/wingwebDbSubnet/serviceAssociationLinks/f68d7e50-1b82-eece-3aeb-07a9207536b0-sal and cannot be deleted. In order to delete the subnet, delete all the resources within the subnet. See aka.ms/deletesubnet.
So that, I go to delete the subnet resource, but the system shows:
Failed to delete subnet
Failed to delete subnet 'wingwebDbSubnet'. Error: Subnet wingwebDbSubnet is in use by wingwebVnet/wingwebDbSubnet/f68d7e50-1b82-eece-3aeb-07a9207536b0-sal and cannot be deleted. In order to delete the subnet, delete all the resources within the subnet. See aka.ms/deletesubnet.
Many thanks for your help!
Azure Virtual Network
{count} votes
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Luke Murray 11,521 Reputation points MVP Volunteer Moderator2023-09-10T22:45:13.0333333+00:00 Hi, wc
There's something linked or using it, what do you see under Connected devices, any connected device will need to be deleted or removed from the Virtual Network:
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GitaraniSharma-MSFT 50,181 Reputation points Microsoft Employee Moderator2023-09-11T05:13:19.67+00:00 Hello @w c ,
Welcome to Microsoft Q&A Platform. Thank you for reaching out & hope you are doing well.
I understand that you are unable to delete a Virtual network and receiving the following error: "Error: Subnet wingwebDbSubnet is in use by /subscriptions/ac69d7f8-f279-4939-8d60-f5d099037571/resourceGroups/wingweb_group/providers/Microsoft.Network/virtualNetworks/wingwebVnet/subnets/wingwebDbSubnet/serviceAssociationLinks/f68d7e50-1b82-eece-3aeb-07a9207536b0-sal and cannot be deleted. In order to delete the subnet, delete all the resources within the subnet. See aka.ms/deletesubnet".
Could you please confirm if you had a Vnet integration between the wingwebDbSubnet and a Web App and was it disconnected properly?
The above error occurs because when you have VNet Integration between a subnet and a Web App (part of App Service Plan), in the backend there is link automatically created (AppServiceLink) and a default delegation on the specified subnet Microsoft.Web/serverFarm and if you delete the Web App/App Service Plan or set subnet delegation to none without disconnecting the VNet integration first, the link gets stuck in the backend and the delegation also, therefore it cannot be removed.
We have a workaround which you can try to resolve this issue (may or may not work, depending on the situation):
If you have already deleted the Web App, follow steps 1 to 5. If the Web App hasn't been deleted yet, follow steps 3 to 5.
- Recreate the App Service Plan that you had (the one you used for VNet Integration) with the exact same name as before in the exact same region as the Vnet.
- Recreate the Web App (name of web app does not matter, it is important only for the ASP)
- Recreate the VNet Integration from Web App > Networking Blade > New VNet Integration and select the specific subnet
- Properly remove the VNet Integration by hitting “Disconnect” in the Web App > Networking > VNet Integration.
- Now try and delete the subnet/Vnet or set the Subnet Delegation to "none".
If the delegation was not to a webapp, then I would request you to try and remove the subnet delegation by following the steps in the below article:
If the above steps do not help in fixing your issue, we may need to raise a support ticket to get the Service Association Link (SAL) deleted from the backend. So, if you have a support plan, I request you file a support ticket, else please do let us know, we will try and help you get a one-time free technical support.
Regards,
Gita
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w c 0 Reputation points
2023-09-11T09:30:18.25+00:00 Screenshot 2023-09-11 192600.png @GitaraniSharma-MSFT Yes, I need a one-time free technical support as I am a learner of using Azure. Many thanks! For your information, the reason why I want to delete the certain resource is that I want to cut the charge by "Azure Database for MySQL Flexible Server"(Please see the attached screen capture). So, I am not sure what I did is solving the problem I faced. Many thanks, and have a great day!
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GitaraniSharma-MSFT 50,181 Reputation points Microsoft Employee Moderator
2023-09-12T04:58:37.51+00:00 Thank you for the update, @w c .
Did you try the above advised steps?
If your subnet is associated with Azure SQL MI, then you can also refer the below doc:
In case the above steps don't help, and you need help with a one-time free technical support, please send an email with subject line "ATTN gishar | Cannot delete resource" to AzCommunity[at]Microsoft[dot]com with the following details, I will follow-up with you.
- Reference this Q&A thread
- Your Azure Subscription ID
Note: Do not share any PII data as a public comment.
We will post a summarized answer once the issue is resolved.
Regards,
Gita
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w c 0 Reputation points
2023-09-13T10:36:37.7666667+00:00 @GitaraniSharma-MSFT I think I am still cannot capable to work on it. I have a already sent a email to AzCommunity@Microsoft.com. Many thanks, and have a great day!
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GitaraniSharma-MSFT 50,181 Reputation points Microsoft Employee Moderator
2023-09-13T11:40:08.53+00:00 Hello @w c , thank you for your email. I've responded on your email with further steps. Please take a look.
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