WINDOW 10 March update killed S/MIME in Outlook OWA. - Microsoft Community


march win 10 update killed outlook owa s/mime. pki common access cards not work digital signatures. authentication still works. no pki encryption.

sessions without s/mime installed worked digital signature capability. once s/mime installed email contents not read or replied to.

this same problem widespread throughout several organizations make use of pki cac digital signatures

***post moved moderator appropriate forum category.***

actually, process work. have used multiple platforms. basically:

add webmail portal trusted sources

open ie , start in-private browser session in safety tab.

make sure enter correct certificate (email).

i recommend insure latest dod root certificates installed (disa).



Office / Outlook / Windows 10 / Unknown/other



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