System Center Configuration Manager Toolkit Package Download Very Slow

Recently I built a new ConfigMgr/SCCM environment for a customer. I installed the Microsoft Deployment Toolkit and created an MDT integrated task sequence in SCCM. The deployment task sequence that I created was very slow, it took at least a couple of hours to load. I noticed that the toolkit package was taking approximately 30 minutes to download. The site server was running Symantec antivirus and I had not yet configured any antivirus exclusions. This was a simple sign server environment therefore I add the exclusions listed in this article on the site server. In a more complex environment the exclusions listed in the article I referenced should be added to all site systems for this particular issue, at a minimum add the relevant ones on all of your distribution points. Once the exclusions were in-place the toolkit package downloaded in less than 1 minute and the entire task sequence installed in ~45 minutes.

For this particular issue you may likely be able to simply add the following exclusions however I added them all.

IIS Exclusions

  • Operational
    • IIS Compressed Files
      • IIS 6.0:
        • %SystemRoot%\IIS Temporary Compressed Files
      • IIS 7.0+:
        • %SystemDrive%\inetpub\temp\IIS Temporary Compressed Files
    • IIS Worker Process
      • %windir%\System32\inetsrv\w3wp.exe
      • %windir%\SysWOW64\inetsrv\w3wp.exe

ConfigMgr Imaging Exclusions

  • Operational
    • <InstallDrive>\ConfigMgr_OfflineImageServicing
    • %windir%\TEMP\BootImages
  • Performance
    • %SystemDrive%\_SMSTaskSequence

ConfigMgr Content Library Exclusions

  • Operational
    • <InstallDrive>\SMS_DP$
    • <InstallDrive>\SMSPKG<DriveLetter>$
    • <InstallDrive>\SMSPKG
    • <InstallDrive>\SMSPKGC$
    • <InstallDrive>\SMSPKGSIG
    • <InstallDrive>\SMSSIG$
  • Performance
    • <InstallDrive>\SCCMContentLib
    • <InstallDrive>\<ConfigMgr Backup Directory>
      • Ex. D:\SCCMBackup
    • <InstallDrive>\<ConfigMgr Package Source Files>
      • Ex. D:\SCCMSource
By |2017-08-07T02:46:00+00:00August 7th, 2017|Configuration Manager (SCCM), General info, OS Deployment|2 Comments

About the Author:

John Marcum


  1. Vijay K November 10, 2017 at 20:47 - Reply

    Thanks for this exclusion list. I have a query regarding SCCM, i am not an expert but trying to understand the requirement & what can be done here -> Regarding SCCM functionality “It takes 3 or 4 days to download BitLocker app for encryption, Sometimes cannot download SAP app, Cannot download Microsoft essential updates, Cannot update Symantec even with the manual way etc”
    Apparently SCCM works quite “slow” – is there anything that you advise to improve the installation process? Thanks in advance

  2. Rana Jayant February 14, 2018 at 11:24 - Reply

    Thank you for the post Marcum. Was interesting to see you sharing your work.

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