Tagged: Troubleshooting

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Moving to Azure Series – Error 78007 on deploying ASR agent

On this series, I want to explore all the situations that you might encounter when you are moving your workloads to the cloud, specially to Azure. Today, while I was preparing for the next wave of migration of the workloads from on premise to Azure, I encounter the following error, while I was deploying the Azure Site Recovery (ASR) agent. After research, I found on the Microsoft documentation the Troubleshoot...

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Unable to RDP into Azure VMs

After patching all the Windows Server in Azure, a colleague calls me in panic, because their users, could not access their VMs through RDP. They were getting a CredSSP error (picture bellow).  So, after reading the link bellow, it seems it could be related with the March update. https://support.microsoft.com/en-us/help/4093492/credssp-updates-for-cve-2018-0886-march-13-2018 Rebooting the VM didn’t sort the issue, there’s a few mitigations listed in this post https://blogs.technet.microsoft.com/mckittrick/unable-to-rdp-to-virtual-machine-credssp-encryption-oracle-remediation/ Then I realize that was...

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How to remotely disable Network Level Authentication (NLA) on Azure Virtual Machine

Today, I received an email from a colleague, saying that he could RDP into his Azure VM after he rebooted the machine through the OS (applying patches).   When he tried to access his Azure VM through an RDP session, he got the following message: “The remote computer that you are trying to connect to requires Network Level Authentication (NLA), but your Windows domain controller cannot be contacted to perform NLA....

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Windows Server 2012 NIC Teaming tools for troubleshooting

NIC Teaming and the powerful administration tools in Windows Server 2012 are very powerful tools that can be misused, misconfigured, and may cause loss of connectivity if the administrator isn’t careful. Here are some common issues: Using VLANs VLANs are another powerful tool. There are a few rules for using VLANs that will help to make the combination of VLANs and NIC Teaming a very positive experience. 1) Anytime you...