Unable to delete default VPC

[Yeswanth_Kumar]

Hi there,

Right now, I'm facing an issue with the delete default VPC network.
I've removed every services connected to this VPC and an error is displayed when I try to reach my action:

Operation type [delete] failed with message "The network resource 'projects/c-dev/global/networks/default' is already being used by 'projects/c-dev/global/networkInstances/v1099102027-dadf1198-7cd5-424a-b573-d4fe759cb588

Could you please help me on deleting this default vpc from project?

Thanks for your feedback.

[mokit]

Hi, @Yeswanth_Kumar. The error indicated that the default VPC is still in use by a network interface (most possibly from a Compute Engine VM), a managed service (like GKE or Cloud SQL), or even a reserved IP. You can follow the below steps in your scenarios:

1. List all resources using the default VPC: gcloud compute instances list --filter="networkInterfaces.network:default". Then delete any listed instances or reassign them to a different VPC (if applicable).
2. Check for other dependencies: gcloud compute networks subnets list --network=default, gcloud compute forwarding-rules list --filter="network=default", gcloud compute routes list --filter="network=default", gcloud compute routers list --filter="network=default".
3. Delete any dependent resources and then try deleting the VPC again.

You can read this documents also: https://cloud.google.com/vpc/docs/create-modify-vpc-networks.

Regards,
Mokit

[Yeswanth_Kumar]

Hi Mohit,

I wanted to update you — I tried all the suggested checks to identify any resources using the default VPC. Below are the exact steps I ran:

gcloud compute routers list --filter="network=default" # No routers

gcloud compute instances list --filter="networkInterfaces.network:default" # No instances gcloud compute networks subnets list --network=default # No subnets

gcloud compute forwarding-rules list --filter="network=default" # No forwarding rules gcloud compute routes list --filter="network=default" # No custom routes gcloud compute addresses list --filter="networkTier=PREMIUM" # Checked reserved IPs (none using default) gcloud container clusters list # No GKE clusters

gcloud sql instances list # All using private IPs from custom VPC gcloud compute networks peerings list # Verified peerings use custom VPC gcloud compute service-attachments list --filter="network=default" # No service attachments

After verifying all of this, I’m still unable to delete the default VPC — it shows an error that it’s still in use, but no resources appear attached.

Could you please advise what else to check or how to find any hidden dependency?

[anlex_N]

@Yeswanth_Kumar Can we remote? I help you.