Skype for Business 2016 MSI - An Error Has Occurred

Issue: 

Users logging in to Skype for Business 2016 MSI are unable to log in and receive the following error.

Solution: 

• Clear the local Skype for Business cache - Click here for instructions.
• Make sure Skype for Business is not running.
• Open File Explorer with Administrator Privileges and navigate to
  
  • 32 Bit - C:\Program Files (x86)\Common Files\microsoft shared\OFFICE16
  • 64 Bit - C:\Program Files\Common Files\microsoft shared\OFFICE16
• Locate ADAL.dll and rename to ADAL.dll.old
• Download the relevant Zip file and extract ADAL.dll
  
  • 32 Bit - Zip file
  • 64 Bit - Zip file
• Copy ADAL.dll to
  • 32 Bit - C:\Program Files (x86)\Common Files\Microsoft Shared\OFFICE16
  • 64 Bit - C:\Program Files\Common Files\Microsoft Shared\OFFICE16
• Open Skype for Business and sign in.

If you continue to experience issues after applying this fix, please contact VIA Support.