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Unable to connect via Bastion SSH to ARM64 based VM, whereas AMD64 based VM works.

Chandrashekhar Kaushik 20 Reputation points Microsoft Employee
2026-01-31T01:53:11.6433333+00:00

I created two VMs - one with an ARM64 CPU and one with AMD64 CPU. Both are on the same v-net/ subnet. There's a dev sku bastion deployed on this v-net.

I am unable to connect to a ARM64 based Virtual machine using Bastion, however I can connect to a AMD64 based Virtual machine using Bastion.

Both the machines are configured exactly the same and use the default Ubuntu 22.04 images.

For the ARM based VM, bastion simple errors out giving a pop-up saying unable to connect.

Could not find anything on the interweb about this.

Azure Bastion
Azure Bastion

An Azure service that provides private and fully managed Remote Desktop Protocol (RDP) and Secure Shell (SSH) access to virtual machines.

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  1. Thanmayi Godithi 9,855 Reputation points Microsoft External Staff Moderator
    2026-01-31T02:06:13.3233333+00:00

    Hi @Chandrashekhar Kaushik.

    Thank you for contacting us.

    As discussed, the issue has been resolved. You can enable Boot Diagnostics on the Bastion service to review the logs.

    As observed, you are now able to successfully connect to the ARM64-based virtual machine using Azure Bastion.

    Ref: Monitor Azure Bastion

    Please210246-screenshot-2021-12-10-121802.pngand “up-vote” wherever the information provided helps you, this can be beneficial to other community members.

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