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No client certificate prompt on browser
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(121.6, 87%, 21%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ESA%3C/text%3E%3C/svg%3E)
S Abijith
471
Reputation points
Hello All,
We have a HTTPs Server application built using HTTPsListener class using the .Net Framework 4.8. This server supports mutual authentication.
We are using the code attached in the question HttpsListener_Code.txt.
But we are facing an issue when using the server against a browser. The problem is that we are not getting the selection window on the browser (Chrome or Edge) to select the client certificate.
Note: We have installed required certificates (self-signed certificates), CA in the Trusted Root Authorities (Local Computer Windows Certificate Store) and the client certificate in the Personal folder (Current User Windows Certificate Store).
Can anyone please let us know as to why we are not getting the selection window on the browser?
Thank you in advance!!
Developer technologies | C#
{count} votes
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(128, 8%, 22%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EA%3C/text%3E%3C/svg%3E)
Anonymous2024-11-26T02:45:19.3533333+00:00 Hi @S Abijith , Welcome to Microsoft Q&A,
Some browsers (such as Chrome and Edge) may cache SSL sessions or not prompt the selection window. Try the following steps:
Clear SSL state in the browser:
Windows Settings > Internet Options > Content > Clear SSL State
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S Abijith 471 Reputation points
2024-12-02T11:29:13.2866667+00:00 Hello @Anonymous ,
Thank you for your response.
I tried the settings suggested, but it didn't make any change for Chrome and Edge.
Any other reason as to why this might be happening??
NOTE: However, we are able to get popup on Internet Explorer.
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Anonymous
2024-12-03T09:54:22.6266667+00:00 Chrome and Edge may have stricter TLS protocol requirements. For example, TLS 1.0 or 1.1 are not supported. Check if your HttpListener is configured with a modern TLS protocol (for example, TLS 1.2 or TLS 1.3):
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S Abijith 471 Reputation points
2024-12-20T11:45:25.7533333+00:00 Hello @Anonymous ,
Thank you for the response. Currently, HttpListener is configured with TLS 1.2 to make the connections. Still not sure as to why no popup shows up on the browser.
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