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Troubleshooting Azure Arc for Servers - Status Offline

SoniaCuff's avatar
SoniaCuff
Icon for Microsoft rankMicrosoft
Apr 28, 2020
While trying out the capabilities of Azure Arc for Servers, I came across a couple of times when the on-premises virtual machine showed as ‘Offline’ in the Azure Portal. To help troubleshoot this, th...
Updated Jul 29, 2024
Version 2.0
azure
Sonia Cuff
Karl-WE's avatar
Karl-WE
MVP
Jul 09, 2024

agree with Cgoff1195  SoniaCuff this artcile could require and updated version, if you have time

Check Status 

Identify disconnected servers >Azure Portal > Azure Update Manager > sort by column "Status"
click on the disconnected server in the first column (alternatively Navigate to the Arc Resource in Azure Portal (top search bar enter DNS name))

Check connection status, should look like this. if it is giving the error about attestation service HIDS, and (re)connected does not work consider the next steps below.

 

cd C:\Program Files\AzureConnectedMachineAgent
.\azcmagent.exe check

. This might take a few minutes."
Use Case  |Endpoint                                              |Reachable  |Private  |TLS      |Proxy
core      |https://agentserviceapi.guestconfiguration.azure.com  |true       |false    |TLS 1.2  |not used
core      |https://gbl.his.arc.azure.com                         |true       |false    |TLS 1.3  |not used
core      |https://login.microsoftonline.com                     |true       |false    |TLS 1.3  |not used
core      |https://management.azure.com                          |true       |false    |TLS 1.3  |not used
core      |https://pas.windows.net                               |true       |false    |TLS 1.3  |not used
core      |https://westeurope-gas.guestconfiguration.azure.com   |true       |false    |TLS 1.2  |not used
core      |https://weu.his.arc.azure.com                         |true       |false    |TLS 1.3  |not used

 



Reconnect:

  • Identify disconnected servers >Azure Portal > Azure Update Manager > sort by column "Status"
  • click on the disconnected server in the first column (alternatively Navigate to the Arc Resource in Azure Portal (top search bar enter DNS name))
  • (Open Server Manager) > Remote PowerShell > Connect to affected server using the copy icon and paste into the PowerShell

     


    Copy the data from the Azure Object 

 

cd C:\Program Files\AzureConnectedMachineAgent
.\azcmagent.exe connect -l location -g resourcegroupname -s subscriptionID

 

 

 

If this does not work, this is the fastest way to fix it.

1. Connect to the machine using Windows Admin Center > Apps > uninstall Connected Machine agent

2. in Azure Portal note the resource group and tags

3. delete the Arc object

4. onboard the machine again using Windows Admin Center