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Outlook and Skype for bussiness prompt for credentials after disconnecting VPN

rdefino
rdefino asked
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Last Modified: 2017-04-20
We have a on-premise Lync 2010 environment and have all our account in the o365 cloud. Our Lync dns points to on-prem lync 2010. If a user running outlook and SFB drop vpn and reconnect, outlook and SFB would just reconnect.
But we just recently repointed the DNS from the on-premise lync to SFB clound, since then when a user drops vpn they get the windows credential prompt for outlook and skype.

Any idea why this is happening now and what I can do to suppress this until we finish decommissioning the on-prem environment?
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