Merge pull request #125845 from justingross-msft/patch-4

Update error-storage-account-name.md

Author: v-dirichards

articles/azure-resource-manager/troubleshooting/error-storage-account-name.md

@@ -53,14 +53,15 @@ Code=StorageAccountAlreadyTaken
 Message=The storage account named storageckrexph7isnoc is already taken.
 ```
 
-## Cause
+There are two main causes for this error.
 
-Common reasons for an error are because the storage account name uses invalid characters or is a duplicate name. Storage account names must meet the following criteria:
+## Cause 1
 
-- Length between 3 and 24 characters with only lowercase letters and numbers.
-- Must be globally unique across Azure. Storage account names can't be duplicated in Azure.
-
-## Solution
+The storage account name uses invalid characters or is a duplicate name. Storage account names must meet the following criteria:
+   - Length between 3 and 24 characters with only lowercase letters and numbers.
+   - Must be globally unique across Azure. Storage account names can't be duplicated in Azure.
+  
+## Solution 1
 
 You can create a unique name by concatenating a prefix or suffix with a value from the `uniqueString` function.
 
@@ -129,4 +130,13 @@ name: '${storageNamePrefix}${uniqueString(resourceGroup().id)}'
 "name": "[concat(parameters('storageNamePrefix'), uniquestring(resourceGroup().id))]"
 ```
 
+## Cause 2
+
+The storage account was recently deleted.
+   - If a request to create the storage account comes from a different subscription and tenant than where it was previously located, it will be denied for security purposes as described here, [Prevent dangling DNS entries and avoid subdomain takeover](https://docs.microsoft.com/azure/security/fundamentals/subdomain-takeover). 
+  
+## Solution 2
+
+[Create a Support Request](https://learn.microsoft.com/azure/azure-portal/supportability/how-to-create-azure-support-request#create-a-support-request****) and choose **Create new storage account** for the problem type, and **Failure(s) during new account creation** for the Problem subtype. Please make sure to include the name of the storage account and the approximate time when account creation failed.
+
 ---