Unable to Install Forefront TMG – “A computer restart is required” warning message

Issue: Consider a scenario where you are not able to install Forefront TMG 2010 with the error message below:


Note: The problem persists even after restart the server.

Cause: this issue can be caused due a Windows Installer problem, in order to fix that review the article How to resolve Common "Windows Installer" Problems. For this particular problem the resolution was to delete the PendingFileRenameOperations from HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager. After that it was possible to successfully install Forefront TMG 2010.


Junaid Ahmad Jan

Support Engineer,

Microsoft CSS Forefront Security Edge Team

Technical Reviewer

Yuri Diogenes

Sr Security Support Escalation Engineer,

Microsoft CSS Forefront Security Edge Team

Comments (6)

  1. Anonymous says:

    Good One Man!!

    This Makes life Simple….

  2. bemfelj says:

    thanks man! i used this tip to resolve the same issue for a different application installation!


  3. HARISH says:

    Thanks Junaid…..used it in one of the case…..and this fix resolved the issue

  4. Andy says:

    Thank you for this, worked perfectly.

  5. MJZ says:

    This was so helpful – I wondered whether windows knew I was perforning a restart. Thanks

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