Hi @Jaya Ojha
The message you're seeing indicates that the VM image you've selected isn't supported by the Azure Update Manager for patch management. Instead, It seems you may need to use a different tool until your VM's OS is supported by Azure Update Manager. You can learn more about which operating systems are supported by checking the provided link to Azure Update Manager documentation.
Get in touch if you need more help with this issue.
--please don't forget to "[Accept the answer]" if the reply is helpful--