This article applies to:
Office 365
Skype for Business 2015 client
PROBLEM:
You constantly receive authentication pop-ups in you Skype for Business client.
CAUSE:
This can happen if your computer has multiple active network connections. Typical example would be a laptop that is docked in a docking station and is therefore simultaneously connected to both Ethernet (wired) and Wi-Fi (wirelesses) connection. In an environment where the Wi-Fi signal is not very reliable, this can cause a connection flipping between the network connections. And since you are suddenly showing up to the server from another network with another IP address, the server will typically require you to re-authenticate, causing the login pop-up on you computer.
SOLUTION:
Disable the wirelesses connection when docked.
Most laptops also have an option in BIOS which can be set to automatically turn off the wirelles connection(s) when docked.
For example with Dell laptops you can find this option in BIOS under Power Management/Wirelles Radio Control. Turn on both Control WLAN and Control WWAN options.
He lives in Zurich, Switzerland and is a dedicated specialist, with 30 years of professional work experience in IT.
Before starting Exchangemaster GmbH he worked as a system engineer and project manager with customers of all sizes and across many industries: From small ISV startups and a NGO humanitarian organizations up to largest international corporations like Stryker, Swisscom, British Telecom and Nyrstar.
He spent his entire career delivering Microsoft based infrastructure solutions with main focus on Active Directory and Exchange. During those years, he collected a valuable work experience on 8 Exchange generations (2019, 2016, 2013, 2010, 2007, 2003, 2000 and 5.5) and has delivered services to a user base of more than 3.2 million mailboxes in on-premise, hybrid and Office 365 deployments.
Beside working on customer projects, he is a regular speaker and expert at Microsoft conferences and user groups. As a Microsoft Certified Trainer he also teaches Microsoft Official Curriculum courses to technical professionals around Europe.
For his work he has received numerous awards.
In 2005 he was the first member to be elected into the MCP Hall of Fame by Windows IT Pro Magazine readers choice (as 1 of 6 worldwide).
From 2005-2017, Dejan has been awarded by Microsoft Corporation with the yearly Microsoft Most Valuable Professional award in area of Exchange for 12 years in a row (one of approximately 100 worldwide and, at the time, the only 1 such in Switzerland).
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