Error adding domain to custom static web app

Ian Morgan 0

I've tried to add both the root domain and a subdomain to my static web app. When adding www as the subdomain I get the error response; "Failed to add custom domain to SWA with error message: CNAME Record is invalid. Please ensure the CNAME record has been created." Yet the CNAME is created in the DNS zone. When trying to add the root I get the error response "domainName is invalid. The domain name given was not found." (Though clearly the DNS zone does exist as it was just selected from the dropdown). I've tried completely recreating the DNS zone and the web app, with no success.

2 answers

TP 78,826 Reputation points

2024-01-26T12:31:20.98+00:00
Hi Ian,

To confirm, do you own the domain? If you are using the domain registrar's DNS, did you create the CNAME record in their web portal? Or, if you are using Azure DNS, did you modify the domain in the registrar's portal so that it points to the correct Azure DNS servers?

For troubleshooting purposes, you can use nslookup on your local machine to make sure the DNS entries are correct. For example, on your local PC you would open a command prompt and enter the following:

nslookup -q=txt yourdomain.com

The output should show the text record with the verification code that was generated in the Azure portal. Similarly, you would enter command similar to below to verify www:

nslookup www.yourdomain.com

The output should show record for your Static Web Site unique domain name.

Please click Accept Answer and upvote if the above was helpful.

Thanks.

-TP
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Ian Morgan 0 Reputation points

2024-01-26T17:49:55.2733333+00:00

Yes, it's all hosted on Azure DNS specifying the relevant nameservers in the registry.

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TP 78,826 Reputation points

2024-01-30T10:16:01.0133333+00:00

@Ian Morgan When you added the apex domain it should've automatically added TXT and alias records to your Azure DNS zone. I did nslookup and there is no TXT record so that the domain can be verified and certificate issued by DigiCert.

Did the TXT record not get created for some reason? The TXT record would have the generated verification code for your SWA. For example, the code would look something like "xrd7gmjfu3bdop79smnehwvu3slznmse". Note the generated code for your SWA is not the same as the code from Entra ID, or Azure App Service.

Ian Morgan 0 Reputation points

2024-01-31T16:27:16.6833333+00:00

Hi - I've also tried verifying an 'external' domain, and that fails to (presumably that's an internal step that you don't see when adding the Azure DNS domain):

TP 78,826 Reputation points

2024-01-31T16:37:17.25+00:00

I just tested using your domain, and it generated the code for the TXT record. No "domainName is invalid...." error message like you are seeing.

Ian Morgan 0 Reputation points

2024-02-10T21:17:47.78+00:00

Thanks for trying it out - I still get the same message :(
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brtrach-MSFT 15,351 Reputation points Microsoft Employee

2024-01-28T05:07:36.0333333+00:00

@Ian Morgan It seems that you have already created the CNAME record in the DNS zone and you are still getting the error message "CNAME Record is invalid. Please ensure the CNAME record has been created" while adding the subdomain. In this case, you can try verifying the CNAME record by running the following command in the command prompt: nslookup -q=CNAME www.yourdomain.com This command will check if the CNAME record is correctly set up for the subdomain. If the CNAME record is correctly set up, it should return the domain name that you set up in the DNS zone. Regarding the error message "domainName is invalid. The domain name given was not found" while adding the root domain, it could be possible that there is some issue with the DNS zone configuration. You can try deleting the DNS zone and recreating it again. Also, make sure that you have selected the correct DNS zone while adding the custom domain to your Static Web App. If you are still facing issues, please provide more details about the steps you followed to add the custom domain and the DNS zone configuration.
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Ian Morgan 0 Reputation points

2024-01-28T16:05:04.56+00:00

Thanks for the response again, much appreciated. I had deleted the static web app and the DNS zone, and recreated them. After waiting a little while longer, I was able to register the subdomain (www) again, so essentially I was back to the same situation as before I had deleted it, and was able to service the www redirect but still with the same 'invalid domain' for the root. The domain is datagram.co, so currently I'm ok with https://www.datagram.co and http://www.datagram.co, however require the appropriate SSL cert by adding the root domain as well. If you could advise why I'm not able to add the apex domain while the subdomain works that would be greatly appreciated. (I only have 1 DNS zone registered, so no issue with selecting the appropriate one).

Ian Morgan 0 Reputation points

2024-01-30T09:21:20.0566667+00:00

Any updates would be appreciated.

Ian Morgan 0 Reputation points

2024-01-30T09:53:57.9+00:00

This is the exact same issue that I'm experiencing here: https://github.com/Azure/static-web-apps/issues/609 After debugging via the Azure CLI I get the following: {"Code":"InternalServerError","Message":"Internal server error occurred. Certificate creation failed unexpectedly.","Target":null,"Details":[{"Message":"Internal server error occurred. Certificate creation failed unexpectedly."},{"Code":"InternalServerError"},{"ErrorEntity":{"ExtendedCode":"51017","MessageTemplate":"Internal server error occurred. {0}","Parameters":["Certificate creation failed unexpectedly."],"Code":"InternalServerError","Message":"Internal server error occurred. Certificate creation failed unexpectedly."}}],"Innererror":null}

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brtrach-MSFT 15,351 Reputation points Microsoft Employee

2024-02-02T00:09:23.0733333+00:00

@Ian Morgan We have reached out to the product group to see if we can gain a response. Please give us another day or two for an update.

Ian Morgan 0 Reputation points

2024-02-10T21:18:55.83+00:00

Hi @brtrach-MSFT - any response from the product team - it seems to be potentially related to my account? Unfortunately I still have the same issue as described.

Ian Morgan 0 Reputation points

2024-02-12T15:09:35.66+00:00

Hello @brtrach-MSFT any feedback from them at all? Thanks.

brtrach-MSFT 15,351 Reputation points Microsoft Employee

2024-02-12T16:23:45.1166667+00:00

@Ian Morgan Unfortunately, we have had an issue getting a response on this matter. I will send you a private message on this thread. You should see a banner at the top of this page if you are logged in with your account. Please review it for next steps.
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Error adding domain to custom static web app

2 answers