Update troubleshoot-macos-platform-single-sign-on-extension.md

[ruaden94]

adding login.windsows.net as this was discovered by a customer when setting up Platform SSO on a Mac.

Internal wiki support docs mention this URL being used. This URL needs to be added to the public doc. When the customer added this URL to their exception list, they were able to complete their PSSO setup.

[prmerger-automator]

@ruaden94 : Thanks for your contribution! The author(s) and reviewer(s) have been notified to review your proposed change.

[learn-build-service-prod]

Learn Build status updates of commit d85bc81:

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[v-regandowner]

@cilwerner - Can you review the proposed changes?

IMPORTANT: When the changes are ready for publication, adding a #sign-off comment is the best way to signal that the PR is ready for the review team to merge.

#label:"aq-pr-triaged"
@MicrosoftDocs/public-repo-pr-review-team

[cilwerner]

@mepples21, can you confirm this?

[mepples21]

I think we need @Veena11 to weigh in on this one. Veena, is login.windows.net a URL we need customers to be including in their SSO profiles? That would be an entirely new URL that we've never needed customers to configure in the past, and SSO Extension profiles have been in use for a few years now...

[v-dirichards]

@Veena11 Could you respond to the comment above?

#assign: @Veena11

[Veena11]

@ruaden94 , could you share more details on the issue reported by customer . Was there PSSO registration step failing or SSO failing ? Please share the internal support wiki doc that calls out this requirement

[ruaden94]

PSSO registration was failing as they were doing TLS inspection on that URL, once they removed the TLS inspection on the URL, their PSSO registration succeeded. There is a case one of our engineers worked, not myself directly.