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TLS now required for my OWA?

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TLS now required for my OWA? - 26.Aug.2008 12:26:07 PM

squintr

Posts: 76
Joined: 4.Jan.2006
Status: offline

My problem is that for Internet Explorer 6 users to access our OWA site they have to go into Internet Options and enable Use TLS 1.0. I'm not sure why because I believe as recently as yesterday that wasn't required. If the user does not enable TLS 1.0 they get "Page Cannot be displayed".

The changes that I know about:
- yesterday the CAS/UM server was restarted
- I installed a certificate signed by our own CA but later removed it -- NOT the same certificate used for the OWA site. We use a wildcard certificate for our OWA site.

We're trying to get Unified Messaging talking to a SIP proxy which is why I installed the certificate mentioned above. There's potentially changes made to the UM side that I've not been made aware of since there's a different team of telephony experts working on that.

Any thoughts??

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RE: TLS now required for my OWA? - fixed - 26.Aug.2008 1:58:02 PM

squintr

Posts: 76
Joined: 4.Jan.2006
Status: offline

While trying to setup a secure SIP connection this setting was changed to "Enabled" instead of "Disabled"

Administrative Tools � Local Security Policy
Security Options � System cryptography: Use FIPS compliant algorithms

(in reply to squintr)

Post #: 2