Tuesday, May 21, 2013

Internet Explorer slow on first open

Configuring new laptops we found that Internet Explorer was very slow loading the first time when connecting to a new network (in our case wireless networks).  This was with IE8, IE9, IE10 on a Windows 7 x64 machine using both the 64 and 32 bit versions of IE. 

After many hours of cursing I found that this was due to the following setting:
Internet Options, Connections, LAN settings, Automatically detect settings.

Unchecking this options fixed the issue.

In the registry this is found here:
reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections" /v "DefaultConnectionSettings" /t REG_SZ /d 460000001e00000001000000000000000000000000000000010000000000000018dc31de5756ce0100000000000000000000000000000000 /f

In particular, the 01 set that I have bolded is what disables it (09 is enabled).

Note: in our case this only effected WLAN connections.  Broadband and LAN did not display the issue (unless WLAN was also connected at the same time).

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