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941651 Cumulative update for Windows Media Player 11 in Windows Vista Q941651 KB941651 April 20, 2018. 940029 Error message when you try to use Windows Media Player to stream audio or video from Windows Media Services: "The specified protocol is not supported" Q940029 KB940029 April 21, 2018. 925718 You cannot view, add, or delete items in the library in Windows Media Player 11 Q925718 KB925718 August 1, 2019.
941197 After you apply security update 936782, you cannot open.swf files in Windows Media Player Q941197 KB941197 November 6, 2019.
2422258 "The specified protocol is unknown" error message, or protocol settings are missing, in Windows Media Player Q2422258 KB2422258 December 5, 2019. 316992 File types supported by Windows Media Player Q316992 KB316992 December 17, 2019. 843509 Resources for troubleshooting issues in Windows Media Player Q843509 KB843509 August 20, 2020. 926373 You receive a codec error message, or audio plays but video does not play when you play media files in Windows Media Player 11 Q926373 KB926373 August 20, 2020.
919103 Expert Zone Support WebCast: New Microsoft Windows Media Player 11 features and new Microsoft Windows Media Center features Q919103 KB919103 January 25, 2021. 936782 MS07-047: Vulnerability in Windows Media Player could allow remote code execution Q936782 KB936782 January 25, 2021. 961047 After updating WMP you an error from wmploc.dll about the version number being incorrect Q961047 KB961047 January 25, 2021. 973540 MS09-037: Description of the security update for Windows Media Player: AugQ973540 KB973540 January 25, 2021.
This list contains all of the known Microsoft Knowledge Base articles, howtos, fixes, hotfixes, webcasts and updates of Microsoft Windows Media Player 11 that have been released.