Export (0) Print
Expand All
Expand Minimize

Event 1041 - UIPI Extension Blocked

Published: June 11, 2010

Updated: June 11, 2010

Applies To: Windows 7, Windows Vista

User Interface Privilege Isolation (UIPI) blocks lower-integrity processes from accessing higher-integrity processes. For example, a lower-integrity process cannot send Windows® messages, or hook or attach to higher priority processes.

UIPI Extension blocking prevents the loading of some Internet Explorer® extensions that are known to be incompatible with Windows Vista® and Windows® 7, or have potential security issues. Typical extensions that could be blocked are:

  • ActiveX® Control

  • Toolbar

  • Browser Helper Object (BHO)

  • Browser Extension

  • MIME Handler

  • Pluggable Protocol

A list of known extensions are listed in the registry at HKEY_LOCAL_MACHINE (or HKEY_CURRENT_USER)\SOFTWARE\Microsoft\Internet Explorer\Extension Compatibility

When Is This Event Logged?

This event is logged when an incompatible or potentially dangerous Internet Explorer extension is encountered.

noteNote
For more information and examples, see the Event 1041-UIPI Extension Blocked topic from Internet Explorer Application Compatibility.

Remediation

There is no fix for this compatibility issue. You must be aware of this issue and design your Web site accordingly.

See Also

Was this page helpful?
(1500 characters remaining)
Thank you for your feedback

Community Additions

ADD
Show:
© 2014 Microsoft