Error uploading certificate file

Question

Error uploading certificate file

Jose Leon 1

When trying to upload a certificate file I get the following error

"We're having problems communicating with the server.
Click to contact Azure Support"

The notification shows:
Add Certificate running
Uploading certificate xxx time ago.

After refreshing the page, the notification is not there.
After trying to request support, it tries to check the last error events, but this error event is not registered, So I cannot even request support

I checked this other forum post
https://learn.microsoft.com/en-us/answers/questions/192112/error-message-occurs-when-trying-to-upload-pfx-cer.html
But I am owner

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Answer 1

ajkuma 28,036 Microsoft Employee Moderator

@Jose Leon , Apologies for the delay from over the weekend and the inconvenience with this issue.

Did you try uploading the private/public certificate?

If it’s a private certificate (if you haven’t already), kindly ensure that the private certificate meets all the requirements as mentioned in the document.

--You may review the past operations/error messages by navigating to Azure Monitor> Activity Log.

>The Activity Log provides insight into the operations on each Azure resource in the subscription from the outside (the management plane) in addition to updates on Service Health events.

I Just test uploaded a certificate and it was successful.

To fetch more details about the issue, you may try these:

--You may leverage App Service diagnostics from Azure Portal> Navigate to your App Service app in the Azure Portal.

> In the left navigation, click on Diagnose and solve problems and select "SSL and Domains" troubleshooting category. [screenshot below]

Jose Leon 1 Reputation point

2022-03-14T15:47:00.353+00:00

Thank you for your answer.
its a private key certificate.
I did double check this time to make sure to include the fullchain as stated here
https://learn.microsoft.com/en-us/azure/app-service/configure-ssl-certificate?tabs=apex%2Cportal#private-certificate-requirements

But the same error occurs when I try to upload the file: "We're having problems communicating with the server"

It shows the notification that is uploading.. but nothing is being done.

I check the activity log and nothing is there, as it never happened. The error is not registered.
ajkuma 28,036 Reputation points Microsoft Employee Moderator

2022-03-14T19:09:41.36+00:00

JoseLeon, Thanks for the quick response and sharing the requested info.

You could capture a network trace via F12 developer tools in the browser to fetch more details on the error.

I understand you have the owner permissions, as you mentioned in your initial post. I have seen similar instances resolved by adding - Microsoft.Web/serverFarms/Write or/removing policy restrictions on the resources. See to confirm if there no policy restrictions at resource/subscription level. Checkout this doc - https://learn.microsoft.com/azure/azure-resource-manager/managed-applications/update-managed-resources#apply-policy-to-managed-resource-group

As an alternative approach, you may try to upload the certificate via PowerShell New-AzWebAppSSLBinding. and/Or consider uploading the certificate from a another browser, just to isolate any plugin or adware issues on the client browser itself.

Bind a custom TLS/SSL certificate to a web app using PowerShell

Kindly let us know how it goes, if the issue still persist, I’ll follow-up with you privately as I would need WebApp and subscription details ( which are PII and so cannot be shared).
Jose Leon 1 Reputation point

2022-03-14T21:14:12.007+00:00

I got it!
Thanks to the error display by the developer tools.

So figured out that maybe the file permissions was the issue, and indeed it was. The file was owned by root/root with permissions (600), so i guessed the browser couldn't upload it? chowned the file to my current user and it worked.
ajkuma 28,036 Reputation points Microsoft Employee Moderator

2022-03-15T11:20:43.783+00:00

@Jose Leon , Glad to know that the issue is resolved (after changing the file permission to current user, from root) . Thanks for the update. Yes, due to the file permission issue the browser could not upload the file. I'll also relay this feedback internally to our product team.

Much appreciate your positive feedback.

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Error uploading certificate file

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