Check the internet security settings on the accounts that are not working.

To change your security level:

1. Open Internet Explorer.
2. Choose Tools > Internet Options.
3. Select the Security tab.
4. Select Custom Level.
5. Find the section "ActiveX controls and plug-ins".
6. Set ' Download Signed ActiveX Controls' to Prompt.
7. Set 'Run ActiveX Controls And Plug-ins' to Prompt.

If you are having trouble installing, make sure that your Internet Explorer security level is not set to High or to a custom level that does not allow viewing of ActiveX controls.

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