I'm trying to access support but all i get is this:

HTTP Error 500.30 - ASP.NET Core app failed to start

Common solutions to this issue:

• The app failed to start
• The app started but then stopped
• The app started but threw an exception during startup

Troubleshooting steps:

• Check the system event log for error messages
• Enable logging the application process' stdout messages
• Attach a debugger to the application process and inspect

For more information visit: https://go.microsoft.com/fwlink/?LinkID=2028265

HTTP Error 500.30 - ASP.NET Core

app failed to start

Common solutions to this issue: 

• The app failed to start
• The app started but then stopped
• The app started but threw an exception during startup

Troubleshooting steps: 

• Check the system event log for error messages 
• Enable logging the application process' stdout messages 
• Attach a debugger to the application process and inspect 

For more information visit: https://go.microsoft.com/fwlink/?LinkID=2028265

Moved from: Microsoft 365 and Office | Excel | For home | MacOS

Hello @Bob Malloy

Thank you for reaching out Microsoft Q&A. Please could you let us know what exactly is your issue for which you want to raise support ticket so that we can guide you.

I've solved the issue myself by uninstalling 365 and reinstalling following a Mac update. But trying to get help from Microsoft was impossible.

That message (HTTP Error 500.30 – ASP.NET Core app failed to start) is the standard error page shown when the website you’re trying to reach has an application startup failure on the server side (it’s not something you can fix from your browser by following the “event log / stdout / debugger” steps—those are for the site owner).

What you can do:

1. Rule out a client/session issue (quick checks)

Try InPrivate/Incognito

Clear cookies/site data for the Microsoft domain and retry

Disable extensions (ad blockers/script blockers)

Try a different browser and/or different network

Use alternate Microsoft support entry points

Microsoft Support “Contact Us” flow (often works even when another support page is failing): https://support.microsoft.com/en-us/contactus/

If this is Azure-related, open a support request from the Azure portal: https://learn.microsoft.com/en-us/azure/azure-portal/supportability/how-to-create-azure-support-request

If you’re on Windows, you can also use the Get Help app as an alternative path to support resources:

Check if there’s a broader Microsoft incident

Azure status page (widespread incidents): https://azure.status.microsoft/

Microsoft cloud status (general): https://status.cloud.microsoft/

If you share which exact support URL is throwing the 500.30 and which product (Azure, M365, Windows, etc.), I can suggest the most direct support path for that specific workload.

Bob