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SripathiR-7225 avatar image
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SripathiR-7225 asked AllenLiu-MSFT commented

SCCM - Machines not discovered which are loggedin below last 90 days.

SCCM - Machines not discovered which are logged in below last 90 days(from AD report).

mem-cm-general
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Jason-MSFT avatar image
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Jason-MSFT answered

Do you have AD System Discovery enabled?

Do the systems exist in an OU that AD System Discovery is configured to discover systems from?

Do the systems properly resolve via DNS from the primary site server?

Have you reviewed adsysdis.log?

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AllenLiu-MSFT avatar image
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AllenLiu-MSFT answered AllenLiu-MSFT commented

Hi, @SripathiR-7225
Thank you for posting in Microsoft Q&A forum.

That is because the site maintenance task: Delete Aged Discovery Data.
It is enabled and set as 90 days by default.
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For for detailed information:
https://docs.microsoft.com/en-us/mem/configmgr/core/servers/manage/reference-for-maintenance-tasks#delete-aged-discovery-data


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There is no update for some days. May we know the current status of the problem? Is there any other assistance we can provide?

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