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How to Enable Music on Hold in Lync (On-Prem)

Retired product. Microsoft retired Skype for Business Online on July 31, 2021, and support for Skype for Business Server 2015 and 2019 ended on October 14, 2025. Microsoft Teams replaces them. This article is kept for reference. Skype for Business Online retirement
Written May 2018. Microsoft changes these admin screens often, so the screenshots below may not match what you see today. The sequence of steps is usually still correct — if something looks wrong, tell us and we'll update it.

Please run the Skype for Business Powershell cmdlt "Get-CsClientPolicy -Identity Global" and check Attribute EnableClientMusicOnHold value should be set to TRUE in order for attendees to hear the MOH. 

If it is False then you have to enable it by doing it's value True.. Run the cmdlts:

		 "Set-CSClientPolicy Global -EnableClientMusicOnHold:$TRUE

–This enables Music On Hold across all users." 

		 "$a = Get-Content -ReadCount 0 -Encoding byte “C:\MoHFiles\happymusic.wma”

–This retrieves the music file, and assigns the file to the $a variable" 

		 "Set-CsCallParkServiceMusicOnHoldFile -Service ApplicationServer:entvoice01.yourdomain.com -Content $a

–This assigns the $a variable (referencing the happymusic.wma file) to Music On Hold for the YourDomain.com domain’s Enterprise Voice pool. Use the FQDN of the server where Call Park (Enterprise Voice) is running."

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