My old Wind7 desktop has almost same environment 5.6.6.1167 and IE11.0.9600.19100 but working fine. Do you have TLS1.2 enabled by the way at IE11->internet options->advanced?
My old Wind7 desktop has almost same environment 5.6.6.1167 and IE11.0.9600.19100 but working fine. Do you have TLS1.2 enabled by the way at IE11->internet options->advanced?