Webportal login redirect not working correctly

I encountered a strange issue with KNIME Server 4.16.2 installed on Azure via marketplace image.

When attempting to login on the Webportal, the first attempt always fails without an error message. Then a second attempt succeeds and open Webportal, but with a ‘Sorry this page does not exist’ message. After clicking ‘back to home page’ everything works normally.

After some digging I found out this is likely a browser issue:

  • opening a second tab and navigating to webportal opens it, suggesting the initial login attempt was already succesful
  • the issue exists on Chrome and Edge, but NOT on Firefox
  • the server access logs reveal different entries for Chrome/Firefox:

Firefox log entries
[30/Mar/2023:13:54:01 +0000] “POST /knime/webportal/j_security_check HTTP/1.1” 303 -
[30/Mar/2023:13:54:01 +0000] “GET /knime/webportal/ HTTP/1.1” 200 982
Chrome log entries
[30/Mar/2023:13:43:18 +0000] “POST /knime/webportal/j_security_check HTTP/1.1” 303 -
[30/Mar/2023:13:43:18 +0000] “GET /knime/webportal/ HTTP/1.1” 304 -

Using incognito mode does not fix the issue, nor does allowing cookies for the KNIME page.

Any suggestions on why this happens, and how to handle it?


Hi alinkdaniel,

the behavior you described is indeed strange. One thing you could try is clearing your browser’s cache and cookies, and then attempting to log in again. Additionally, could you please confirm whether the issue persists when using both HTTP and HTTPS protocols (8080 and 8443 ports)?

Best regards,

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