Schannel Event ID 3688

Sur un certain nbre de pc, je vois cette erreur, et ce, depuis install Skype il me semble.

Cf https://support.software.dell.com/fr-fr/appassure/kb/141591 et  https://social.technet.microsoft.com/Forums/windows/en-US/3482c626-ff4b-46c9-b5a8-1ee4999693f7/event-3688-schannel

Schannel Event ID 3688: This issue may be the result of TLS 1.2 NOT being disabled.
-> Internet options\Advanced\ and uncheck "Use TLS 1.0"

Windows 8 RTM, Win 7 Pro (IE8 or IE9) : In Group Policy Editor (run: gpedit.msc),  went to Computer Configuration > Administrative Templates > System > Distributed COM > Application Compatibility and enabled "allow local activation security check exemptions"