On the ‘Overview of the Volume License (VL) Serializer’ microsoft webpage it says under ‘Additional information about the VL Serializer’ that ‘The volume license is located in the /Library/Preferences/2.plist file.’ I have noticed when I run the volume license serializer package file I cannot find that file in that location. I have downloaded and run the license removal tool to remove any licenses that may be on my machine, restarted my machine, tried again and still it doesn’t work. I also tried doing the same thing with Office 2019 and using the respective volume license serializer package file (Microsoft_Office_2019_VL_Serializer_Universal.pkg) and still it doesn’t work. However if I try to open an office app it still asks me to sign in (i.e. MicrosoftOffice2019VLSerializer.pkg official link run MicrosoftOffice2019VLSerializer and it will automatic activate Office 2019 open the office app, completed. Can't add my KMS host for Active Directory-Based Activation without the 2021 VL Pack (can add my 2019 KMS with the 2019 VL Pack, but not my 2021 KMS host). Non-365, looking to to upgrade Office 2016 to Office LTSC 2021. Office suites have separate setup keys for online functionality like web apps.

The Type column for this key should say MAK, not KMS.

In the table beneath the name of the product, find your product key in the column labeled Key. I ran the package file for the serializer thinking it would activate Office LTSC for Mac 2021. Didn't see the 2021 VL Pack on VLSC, just my KMS & MAK keys. Find your Office product in the list and click its Key link. I have downloaded and installed Office LTSC for Mac 2021, I have also downloaded the volume license serializer for Mac 2021 (Microsoft_Office_LTSC_2021_VL_Serializer.pkg).

Microsoft office 2021 vl serializer