fixed references

Author: AmandaAZ

support/azure/azure-kubernetes/availability-performance/node-not-ready-expired-certificates.md

@@ -55,9 +55,9 @@ Check the expiration dates of certificates by invoking the [openssl-x509](https:
 
 You might receive certain error codes after you invoke these commands. For information about error codes 50, 51, and 52, see the following links, as necessary:
 
-- [Troubleshoot the OutboundConnFailVMExtensionError error code (50)](../create-upgrade-delete/error-code-outboundconnfailvmextensionerror.md)
-- [Troubleshoot the K8SAPIServerConnFailVMExtensionError error code (51)](../create-upgrade-delete/error-code-k8sapiserverconnfailvmextensionerror.md)
-- [Troubleshoot the K8SAPIServerDNSLookupFailVMExtensionError error code (52)](../create-upgrade-delete/error-code-k8sapiserverdnslookupfailvmextensionerror.md)
+- [Troubleshoot the VMExtensionError_OutboundConnFail error code (50)](../error-codes/vmextensionerror-outboundconnfail.md)
+- [Troubleshoot the VMExtensionError_K8SAPIServerConnFail error code (51)](../error-codes/vmextensionerror-k8sapiserverconnfail.md)
+- [Troubleshoot the VMExtensionError_K8SAPIServerDNSLookupFail error code (52)](../error-codes/vmextensionerror-k8sapiserverdnslookupfail.md)
 
 If you receive error code 99, this indicates that the [apt-get update](https://linux.die.net/man/8/apt-get) command is being blocked from accessing one or more of the following domains:
 

support/azure/azure-kubernetes/create-upgrade-delete/error-code-vhdfilenotfound.md

@@ -38,11 +38,9 @@ Review [outbound network and FQDN rules for Azure Kubernetes Service (AKS) clust
 
 For detailed troubleshooting steps, refer to the troubleshooting guides in the following articles:
 
-- [Troubleshoot the OutboundConnFailVMExtensionError error code (50)](error-code-outboundconnfailvmextensionerror.md)
-
-- [Troubleshoot the K8SAPIServerConnFailVMExtensionError error code (51)](error-code-k8sapiserverconnfailvmextensionerror.md)
-
-- [Troubleshoot the K8SAPIServerDNSLookupFailVMExtensionError error code (52)](error-code-k8sapiserverdnslookupfailvmextensionerror.md)
+- [Troubleshoot the VMExtensionError_OutboundConnFail error code (50)](../error-codes/vmextensionerror-outboundconnfail.md)
+- [Troubleshoot the VMExtensionError_K8SAPIServerConnFail error code (51)](../error-codes/vmextensionerror-k8sapiserverconnfail.md)
+- [Troubleshoot the VMExtensionError_K8SAPIServerDNSLookupFail error code (52)](../error-codes/vmextensionerror-k8sapiserverdnslookupfail.md)
 
 
 ## References

support/azure/azure-kubernetes/error-codes/vmextensionerror-k8sapiserverconnfail.md

@@ -7,7 +7,7 @@ ms.service: azure-kubernetes-service
 #Customer intent: As an Azure Kubernetes user, I want to troubleshoot the VMExtensionError_K8SAPIServerConnFail error code (or error code ERR_K8S_API_SERVER_CONN_FAIL, error number 51) so that I can successfully start or create and deploy an Azure Kubernetes Service (AKS) cluster.
 ms.custom: sap:Create, Upgrade, Scale and Delete operations (cluster or nodepool)
 ---
-# Troubleshoot the K8SAPIServerConnFailVMExtensionError error code (51)
+# Troubleshoot the VMExtensionError_K8SAPIServerConnFail error code (51)
 
 This article discusses how to identify and resolve the `VMExtensionError_K8SAPIServerConnFail` error (also known as error code ERR_K8S_API_SERVER_CONN_FAIL, error number 51) that occurs when you try to start or create and deploy a Microsoft Azure Kubernetes Service (AKS) cluster.