Hi @jbj1181
Welcome to the Microsoft Q&A Platform! Thank you for asking your question here.
First review the logs on Azure Monitor and your servers; Common error messages can give you a reason why some servers are showing "No updates data". If the update tools got stuck in "Creating" or "Updating", try uninstalling and reinstalling them through the Azure Portal or Azure CLI. Make sure the Azure Arc agents on all your servers are up to date to the latest version, as new updates often fix bugs and improve stability. Also, make sure your servers have a stable Internet connection to Azure, as intermittent connections can cause problems.
Analyze any restrictions in your Azure subscription that may affect the update process and monitor Azure Service Health for any ongoing issues that may affect the update manager. If you are still having trouble after trying these steps, I suggest you contact Azure Support for customized help. Finally, exploring community forums can be useful, as other users often share their experiences and solutions to similar issues. I hope these tips help you set things right.
If you have any further queries, do let us know
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