Delete Cache Skype for Business / Lync

KBA-01388-L7W5

Summary

Skype for Business and Lync cache information on Windows or MAC OS X to read information quickly and efficiently. Possible reasons why you would want to clear the Skype for Business / Lync cache include:

• You cannot log in to Skype for Business.
• Your Outlook and Skype for Business integration is not functioning properly.
• You have issues with Presence.
• Your Contact list is out of date.
• You cannot search for users in Skype for Business.

Skype for Business, Lync 2010, Lync 2013 for Windows

1. Log out of Skype for Business.
2. Delete any sign-in info.
3. Exit Lync.
4. Open Run bar and type in %AppData%. Make sure you’re in the AppData directory and navigate to\Local\Microsoft\Office\15.0 (or 16.0)\Lync\ for Skype for Business and Lync 2013, or \Local\Microsoft\Office\12.0\Lync\ for Lync 2010.
5. Delete sip_profileName folder. If you do not see this folder, check the \Local\Microsoft\Communicator directory.
6. Delete all files in Tracing folder. Do not delete the folder itself.
7. Clear DNS cache: in Command Prompt run ipconfig /flushdns command.

Lync 2011 for MAC

1. Log out and quit Lync.
2. Go to Finder > press Command+Shift+G > type in /users/<MacUsername>/library > delete the following files:

• • Caches > com.microsoft.Lync
  • Internet Plug-Ins > MeetingJoinPlugin.plugin
  • Keychains > all files beginning with OC__KeyContainer
  • Logs > Microsoft-Lync-x.log and Microsoft-Lync.log
  • Preferences > com.microsoft.Lync.plist
  • Preferences > ByHost > MicrosoftLyncRegistrationDB.xxxx.plist

3. Go to Finder > press Command+Shift+G > type in /users/<MacUsername>/documents > navigate to Microsoft User Data > delete the following folders: Microsoft Lync Data and Microsoft Lync History.
4. Open Keychain Access from /Applications/Utilities folder.
5. Delete all keychains starting with OC__KeyContainer.
6. In your Login keychain, delete all e-mail address certificates.
7. Empty Trash.