I rolled out IE8 to a group of test users in our organisation overnight, and after logging in in the morning, several of the users reported the error

Userinit.exe error and explorer.exe error  - iertutil.dll not found

After clicking OK, the PC just hangs with the background visible.

A few people are reporting this error in various forums, but "do a system restore" is not a good solution. We can easily roll back to IE6 by replacing the DLL, or by uninstalling IE8. We just need a flawless rollout!

We're on Windows XP Service Pack 3.

Edit: We deploy via SMS. Initially we had 2 machines with the error, but somebody made a mistake with the test package and it rolled out five nights in a row. By the end of the five nights, 4 more machines had developed the same issue.


A quick google of the error message took me to this site here that appears to have the same issue as you're describing. Does their solution help you?

They're not just doing a system restore, as some of what they're describing is pulling the file from another location and copying it to the correct location on the erroring PC.

  • We could probably do that, yeah, but it would nice to figure out why 20% of our machines are getting this issue. – christianlinnell Aug 30 '09 at 21:39
  • What is your installation procedure? Admin user doing it, or power user, or...? Any errors popping up anywhere in the process? Custom policies, custom permissions...? Any common threads with the machines (manufacturer, for example, OEM install...)? – Bart Silverstrim Aug 30 '09 at 22:12
  • Updated question text. It's the local system account performing the install via SMS. Manufacturers all the same, deploying to the same custom XP image. – christianlinnell Aug 31 '09 at 3:55
  • Could it have been a corruption in the update? – Bart Silverstrim Aug 31 '09 at 20:56

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