Here is the console output from the default _IEErrorHandlerRegister() : +>18:38:13 Starting AutoIt3Wrapper v.2.0.0.3 Environment(Language:0409 Keyboard:00000409 OS:WIN_XP/Service Pack 3 CPU:X64 OS:X86) >Running AU3Check (1.54.19.0) from:C:\Program Files\AutoIt3 +>18:38:13 AU3Check ended.rc:0 >Running:(3.3.2.0):C:\Program Files\AutoIt3\autoit3.exe "C:\boboPath\boboPage.au3" --> COM Error Encountered in boboPage.au3 ----> $IEComErrorScriptline = 3618 ----> $IEComErrorNumberHex = 80020009 ----> $IEComErrorNumber = -2147352567 ----> $IEComErrorWinDescription = Access is denied. ----> $IEComErrorDescription = Access is denied. ----> $IEComErrorSource = ----> $IEComErrorHelpFile = C:\WINDOWS\system32\mshtml.hlp ----> $IEComErrorHelpContext = 0 ----> $IEComErrorLastDllError = 0 --> IE.au3 V2.4-0 Warning from function _IEAttach, $_IEStatus_NoMatch --> IE.au3 V2.4-0 Error from function _IEGetObjByName, $_IEStatus_InvalidDataType --> IE.au3 V2.4-0 Error from function _IEAction, $_IEStatus_InvalidDataType +>18:38:14 AutoIT3.exe ended.rc:0 +>18:38:15 AutoIt3Wrapper Finished >Exit code: 0 Time: 1.833 I have read about other users encountering similar errors but have yet to read about a solution. Also, at the time _IEAttach is called, there are two modal dialogs (Class:InternetExplorer_TridentDlgFrame) open on top of the IEFrame; could this be the cause of the error?