Error 501 net::ERR_INSECURE_RESPONSE Unknown error Plesk

Friday, 5. April 2013

I have had this issue while accessing plesk control panel. With a lot of forums about this issue I was still unable to go pass this error until I found out the issue could actually be due to SSO (Single Sign-On)

Jumped to my command terminal and whacked in this commend to disable sso – and whallah! I could now access the Plesk control panel as usual..

/usr/local/psa/bin/sso --disable

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