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uninstall SCCM Without Effecting AD. RRS feed

  • Question

  • Hi  guys, First Question so please be nice :)

    So, we have a test environment where we have a full SCCM/AD/SQL/Exchange.

    I need to uninstall the SCCM (outdated 180 day trial) and reinstall a new more up to date version of SCCM.

    I have to be able to do this without effecting the AD (which is a clone of the corporate AD with all assetts) so that i can have full "corporate" test environment when i install the new SCCM.

    I am aware of the link https://www.prajwaldesai.com/uninstall-sccm-primary-site/ to uninstall SCCM primary site.  However im unaware of any "gotchas" or any specific things i may need to do (or leave, or delete, or not delete) or not do so that once SCCM has been uninstalled i can re-install a new SCCM without damaging the currect existing AD/Exchange/SQL set up.

    I hope i explained myself properly and i appreciate any help you guys can give me.

    Many thanks,

    Mark

    Tuesday, May 21, 2019 12:58 PM

All replies

  • There's really nothing to do done here. ConfigMgr has zero impact on AD, Exchange or any SQL instance. 

    The only connection to any of these are a handful of objects published in the System Management container in AD (assuming that publishing was even enabled) and the ConfigMgr database in the SQL instance. Performing a clean uninstall of the primary site should remove these but you can also simply flatten the server and manually delete these.


    Jason | https://home.configmgrftw.com | @jasonsandys

    Tuesday, May 21, 2019 2:13 PM
    Moderator
  • Hi,

    Thanks for the reply.

    So are you saying if i uninstall SCCM there will be no loss of the AD integration etc? What i plan to do is upgrade the VM to 2012 R2 from 2008 (i cant use a new VM) install the latest SCCM (180 trial) and use it alongside the full AD we have on the VM without any loss of assetss etc?

    thanks

    Mark
    Tuesday, May 21, 2019 3:13 PM
  • > So are you saying if i uninstall SCCM there will be no loss of the AD integration etc?

    There is no real integration. As noted, the only persistent thing that happens between ConfigMgr and AD is a handful of objects published to AD in the System Management container. That's it.

    without any loss of assetss etc?

    I have no idea what you mean by "assets" here.


    Jason | https://home.configmgrftw.com | @jasonsandys


    Tuesday, May 21, 2019 3:51 PM
    Moderator
  • Hi Jason,

    Sorry im probably being very vague and no doubt not explainign myself very well :(

    When i say assetts i mean all the assetts (pcs, laptops, phones, users etc) that are in the test environment AD.

    Thaks for your replies.

    Mark

    Wednesday, May 22, 2019 8:03 AM
  • OK, same answer ultimately though. ConfigMgr has no control over AD or objects in it. As noted, there is no "integration" in the strictest sense. It's simply some objects published to AD.

    Jason | https://home.configmgrftw.com | @jasonsandys

    Wednesday, May 22, 2019 3:30 PM
    Moderator
  • Uninstall ConfigMgr and decommission the server properly (remove from domain, DNS etc). That still leaves the items published to the System > Systems Management container in AD (you'll need to View Advanced Features to see this in ADUC). You may have to remove them manually.

    That leaves the ConfigMgr client installed on your assets (test desktops, laptops). After you re-install the latest ConfigMgr version you will install the new ConfigMgr client on these devices. This will automatically remove the previous client version and join to the new site.



    Gerry Hampson | Blog: www.gerryhampsoncm.blogspot.ie | LinkedIn: Gerry Hampson | Twitter: @gerryhampson


    Sunday, May 26, 2019 11:32 AM