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  • Blog Post: Azure DNS Server Redundancy

    Customers may observe that their PaaS role instances and IaaS virtual machines are only issued one DNS server IP address by DHCP. This does not mean that name resolution in Azure has a single point of failure however. The Azure DNS infrastructure is highly redundant. The IP address that is exposed...
  • Blog Post: What is the IP address 168.63.129.16?

    The IP address 168.63.129.16 is a virtual public IP address that is used to facilitate a communication channel to internal platform resources for the bring-your-own IP Virtual Network scenario. Because the Azure platform allow customers to define any private or customer address space, this resource must...
  • Blog Post: Unable to connect to multinic Linux VM

    When creating an Azure VM with multiple NICs and subnets, the guest's default gateway is not automatically set. This may cause loss of SSH connectivity as the default gateway is not assigned to the NIC that is listening for incoming traffic. Troubleshooting To access the VM, create a second VM...
  • Blog Post: Unable to delete VHD, “There is currently a lease on the blob…”

    For classic VMs, there are artifacts (metadata about the VHDs) that keep a lease on the VHD even when no VM is using it. To delete a disk or image for classic VMs, in the classic portal ( https://manage.windowsazure.com/ ) select Virtual Machines on the left navigation pane, then select the Disks...
  • Blog Post: How to Copy files to/from Azure Storage

    If you are looking for a reliable way to copy files to or from Azure storage then this blog post might just have the right answer. Note: In this post I am not writing anything new but merely pointing to posts or tools that already exists. Copying VHDs (Blobs) between Storage Accounts using Azure...
  • Blog Post: Avoiding allocation failure error in Microsoft Azure

    In some cases you may encounter an allocation failure error when you are trying to perform an action which includes: Deleting and recreating a VM Creating a new VM Deploying new packages Deploying updates to existing deployments Starting a VM from stopped de-allocated state Below...
  • Blog Post: Taking a closer look at Microsoft Azure Maintenance to avoid downtime

    We receive a lot of cases where the customer wants to know why their VM running in Azure was restarted and why they were not pre-notified about the same and in the future can we pre-notify them when there is any maintenance performed. This blog post is an attempt to answer these questions and shed...
  • Blog Post: How to move your Windows server VM running on Hyper-V to Microsoft Azure

    Note: This blog post comes from Manoj Sehgal, Sr. Support Escalation Engineer from Microsoft Azure team. The following blog post will guide you through the procedure to move your on premises Windows server VM which is running in Hyper-V or VMWare environment to Microsoft Azure, by uploading its...
  • Blog Post: Microsoft Azure datacenter's IP location, shows incorrect location when using IP Geolocation services

    If you have looked up the IP that is assigned to your Microsoft Azure deployments using any of the IP geolocation services then you must have noticed that the IP location and deployment location are shown differently. For example if you have a deployment that is hosted in East US datacenter and when...
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