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+--- Thread: can not connect after upgrade (/showthread.php?tid=6319)
can not connect after upgrade - stevesu - 19.02.2026
hi, i just installed a upgrade and now i'm unnable to connect to the webpage of my schneider wiser for knx,
i get the message "ERR_SSL_SERVER_CERT_BAD_FORMAT"
after installing there was a message about using https .
if someone could give a solution.
thanks
RE: can not connect after upgrade - Daniel - 19.02.2026
SE FW is forcing you now to use HTTPS and browser will complain about not valid certificate. Depend of the browser you use it will look different but you must press 'advaned' and then proceed anyway.
RE: can not connect after upgrade - stevesu - 19.02.2026
(19.02.2026, 12:47)Daniel Wrote: SE FW is forcing you now to use HTTPS and browser will complain about not valid certificate. Depend of the browser you use it will look different but you must press 'advaned' and then proceed anyway.
hi , normally i'm familiar with the advanced button, but it isn't there, using chrome.
RE: can not connect after upgrade - Daniel - 19.02.2026
Try different browser, can you ping it?
RE: can not connect after upgrade - stevesu - 19.02.2026
ping yes,
edge = no
firefox = yes
can i restore when i connect true firefox so i can use chrome again ?
RE: can not connect after upgrade - Daniel - 19.02.2026
Clear the browser cache in Chrome and see again. For me Chrome works fine.
RE: can not connect after upgrade - stevesu - 19.02.2026
(19.02.2026, 13:06)Daniel Wrote: Clear the browser cache in Chrome and see again. For me Chrome works fine.
solved it by in system > changing http modus to "http and https"
in browser adding the additional port number
thanks