Azure functions swap functionality is not working after enabling private endpoint for function app linked storage

Question

Azure functions swap functionality is not working after enabling private endpoint(with selected networks option) for function app linked storage account(webjobstorage)

Created private endpoint for blob, file and table storage

Below are the additional app settings I am adding

{
    "name": "WEBSITE_CONTENTOVERVNET",
    "value": "1",
    "slotSetting": false
  },
  {
    "name": "WEBSITE_CONTENTSHARE",
    "value": "production",
    "slotSetting": false
  },
  {
    "name": "WEBSITE_DNS_SERVER",
    "value": "168.63.129.16",
    "slotSetting": false
  },
  {
    "name": "WEBSITE_VNET_ROUTE_ALL",
    "value": "1",
    "slotSetting": false
  }

Referred this article Secure storage account linked to Function App with private endpoint

From the azure devops I am trying to deploy the code to staging slot first, then later I am swapping it with prod slot. at this step it is failing.

Tried to swap it from the portal that also failed.

I am getting below error

From devops swap task :

##[error]Error: Failed to swap App Service 'testmgmt-fa-min-go' slots - 'staging' and 'production'. Error: InternalServerError - There was an unexpected error swapping slots 'staging' and 'production' for site 'testmgmt-fa-min-go(staging)'. Please try to cancel your swap operation. (CODE: 500)

From Portal:

Answer 1

Thanks to @UBK, your comment helped me to resolve the same swapping issue in my Azure Private Endpoint Function App.

I tried to reproduce the issue by following the given documentation: Secure storage account linked to Function App with private endpoint - Microsoft Tech Community

Solved the swapping issue by allowing access to all networks in the Networking of Storage Account.