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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•            Your Contact list is out of date.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

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.

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