Setting "Run WWW service in IIS 5.0 isolation mode" does not persist in IIS 6

Posted by Saul Dolgin on Server Fault See other posts from Server Fault or by Saul Dolgin
Published on 2012-11-15T16:30:10Z Indexed on 2012/11/15 17:03 UTC
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Our IIS server was recently patched with the latest Microsoft Security Updates and since then, I am unable to enable the "Run WWW service in IIS 5.0 isolation mode" setting. This setting was enabled prior to patching and somehow changed during the updates. I have tried both using the IIS Manager console and the adsutil.vbs approach to change it. Either way, after resetting IIS for the change to take effect, when I go to verify that the isolation mode setting is enabled (true) I find that is reverts back to being disabled (false).

Now... The patches have already been rolled back, however the setting still does not persist when I enable it. While I am trying to research the patches that were applied to see if there is a known issue (or perhaps a change in this setting's behavior) I was hoping someone else might have come across the same problem. Any help towards a workaround would be greatly appreciated!

Isolation Mode

>cscript adsutil.vbs set W3SVC/IIs5IsolationModeEnabled TRUE

    IIs5IsolationModeEnabled        : (BOOLEAN) True

>iisreset

    Attempting stop...
    Internet services successfully stopped
    Attempting start...
    Internet services successfully restarted

>cscript adsutil.vbs get W3SVC/IIs5IsolationModeEnabled

    IIs5IsolationModeEnabled        : (BOOLEAN) False

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