Quick Tip: Lync Web App launches instead of Lync Client

February 10, 2014

Scenario: User clicks on a Join Lync Meeting link from Outlook and the default browser launches but leaves the user within the Lync Web App, instead of launching the full Lync client.

Issue: Within the Windows OS there should be a file extension association for .ocsmeet that is tied back to the Lync (Desktop) or Lync (Windows Store) application.

Resolution: You can fix this by either reinstalling the full client or simply importing in the registry keys needed for this file extension association.  There are three places the file extension association is listed:

Current User Software – Download

Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\Software\Classes\ocsmeet_auto_file]

[HKEY_CURRENT_USER\Software\Classes\ocsmeet_auto_file\shell]

[HKEY_CURRENT_USER\Software\Classes\ocsmeet_auto_file\shell\edit]

[HKEY_CURRENT_USER\Software\Classes\ocsmeet_auto_file\shell\edit\command]
@=”\”C:\\Program Files (x86)\\Microsoft Office\\Office15\\Lync.exe\” \”%1\””

[HKEY_CURRENT_USER\Software\Classes\ocsmeet_auto_file\shell\open]

[HKEY_CURRENT_USER\Software\Classes\ocsmeet_auto_file\shell\open\command]
@=”\”C:\\Program Files (x86)\\Microsoft Office\\Office15\\Lync.exe\” \”%1\””

Classes Root – Download

Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\ocsmeet_auto_file]

[HKEY_CLASSES_ROOT\ocsmeet_auto_file\shell]

[HKEY_CLASSES_ROOT\ocsmeet_auto_file\shell\edit]

[HKEY_CLASSES_ROOT\ocsmeet_auto_file\shell\edit\command]
@=”\”C:\\Program Files (x86)\\Microsoft Office\\Office15\\Lync.exe\” \”%1\””

[HKEY_CLASSES_ROOT\ocsmeet_auto_file\shell\open]

[HKEY_CLASSES_ROOT\ocsmeet_auto_file\shell\open\command]
@=”\”C:\\Program Files (x86)\\Microsoft Office\\Office15\\Lync.exe\” \”%1\””

Current User – Download

Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.ocsmeet]

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.ocsmeet\OpenWithList]
“MRUList”=”a”
“a”=”Lync.exe”

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.ocsmeet\OpenWithProgids]
“ocsmeet_auto_file”=hex:00

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.ocsmeet\UserChoice]
“Progid”=”ocsmeet_auto_file”


Richard

Written by Richard Richard is an Office Apps & Services MVP (Teams / Skype) who lives in Minneapolis, MN. Microsoft Certified Solutions Master (MCSM) and MCSM Instructor - when those were a thing long ago. When not writing code, breaking teams - debate coach and avid golfer.
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