Delete Cache Skype for Business / Lync



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  • Your Contact list is out of date.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 >
    • Internet Plug-Ins > MeetingJoinPlugin.plugin
    • Keychains > all files beginning with OC__KeyContainer
    • Logs > Microsoft-Lync-x.log and Microsoft-Lync.log
    • Preferences >
    • Preferences > ByHost > MicrosoftLyncRegistrationDB.xxxx.plist
  1. 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.
  2. Open Keychain Access from /Applications/Utilities folder.
  3. Delete all keychains starting with OC__KeyContainer.
  4. In your Login keychain, delete all e-mail address certificates.
  5. Empty Trash.



Share this: