the DNS for my site was working yesterday. Today, I get a 404 from Azure

Jerry Teague 0

Hi, I'm doing some integration testing of my app before it goes live - all working well yesterday.

Today, I'm getting a 404 from Azure when I try to access it. My DNS is with namecheap - I checked the routing and that works. It's a static web app and when I go to the azure-provided url (https://somerandomstring.azurestaticapps.net) the site is served. I'd thought that it must be the dns provider, but that's getting through to the Azure 404 page.

Thanks for taking the time to read this!

Patchfox 3,921 Reputation points

2023-09-17T11:05:36.06+00:00

Hi, could give us more info about your app config, with the staticwebapp.config.json.

Without it is hard to verify where the root cause is. But yes you're right, when you see an Azure 404 error then it seems to be no dns provider problem
Jerry Teague 0 Reputation points

2023-09-18T08:34:58.8533333+00:00

Thanks, I'd do that, but my account is now screwed up. It looks like it's been been reset to a previous state. I've raised a support request, but that's been assigned category C. Site is down, cat C...
Jerry Teague 0 Reputation points

2023-09-18T08:43:39.69+00:00

just got back in. I have nothing in my config
brtrach-MSFT 16,356 Reputation points Microsoft Employee

2023-09-25T03:11:53.2333333+00:00

@Jerry Teague Please let us know if the below response is helpful by accepting it as the answer. If you have further questions or concerns, please reply here so we can assist you further.

1 answer

brtrach-MSFT 16,356 Reputation points Microsoft Employee

2023-09-25T02:03:49.86+00:00

@Jerry Teague Since you're able to access the site through the Azure-provided URL, it's possible that there's an issue with the custom domain configuration.

Have you recently made any changes to your custom domain settings in Azure? If so, it's possible that there's a misconfiguration that's causing the 404 error.

One thing you can try is to check the custom domain settings in the Azure portal to make sure that they're configured correctly. Specifically, you'll want to make sure that the custom domain is registered and verified in your Azure account, and that the DNS records are set up correctly with your DNS provider.

If you're still having trouble after checking these settings, it's possible that there's an issue with the deployment of your static web app. In that case, you may want to check the deployment logs in the Azure portal to see if there are any errors or issues that are preventing the app from being served correctly.
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Jerry Teague 5 Reputation points

2023-09-25T15:23:31.1033333+00:00

thanks for the reply. No, it's not that. I hadn't made changes to my custom domains and when I added a new custom domain, set up CORS etc. and logged in, I was looking at an old version of my webapp.

I've been doing support videos and the site was very different - different background colours and version numbers.

For the DNS, that had been working for weeks.

All good stuff to check, but I'd discounted them asap.

brtrach-MSFT 16,356 Reputation points Microsoft Employee

2023-09-26T01:49:47.4966667+00:00

Thanks for the update. It's good to know that the custom domain settings and DNS configuration are not the issue.

Based on what you've described, it sounds like there may be a caching issue with your web app. It's possible that your browser or a CDN is caching an old version of your site, which is why you're seeing an outdated version of your app.

One thing you can try is to clear your browser cache and cookies, and then try accessing your site again. If that doesn't work, you may want to check if there's a CDN in front of your site and see if there's a way to clear the cache for your site.

If you're still having trouble after trying these steps, it may be helpful to check the deployment logs in the Azure portal to see if there are any errors or issues that are preventing the app from being served correctly.

Go to the Azure portal and navigate to your Static Web App.

Click on the "Functions" tab in the left-hand menu.

Click on the "App Service Editor" button in the top menu.

In the App Service Editor, click on the "Log Stream" button in the top menu.

The Log Stream will open in a new window, and you should see the deployment logs for your Static Web App.

If none of these final item's work, please let me know by replying here and we have one final item.

Jerry Teague 5 Reputation points

2023-09-26T08:03:41.68+00:00

Thanks. This is absolutely a problem on the Azure stack. I never have local caching issues - I'm not live yet, so I run integration tests on every release on the 'production' stack and I see the changes reflected in the test runs.

In that respect, I'm really impressed with Azure.

The custom domain has completely disappeared from my 'custom domains' and I cannot recreate it.

I have an outstanding support call with the azure engineers
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the DNS for my site was working yesterday. Today, I get a 404 from Azure

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