iTunes 10.5 for Windows: May see performance issues and blank iTunes Store

Symptoms

You may notice the following symptoms after installing iTunes 10.5 for Windows:

Products Affected

iTunes Store, iTunes 10 for Windows

Resolution

Look for modifications to Windows by:

1. Running MSINFO32 by choosing either Start >?Run, or using the search box to search for MSINFO.
2. Once it is open, expand Components and then expand Network.
3. Click Protocol. The first value should look like this:



However, if you find a value that is more like this, it indicates that there's an LSP?(Layered Service Provider)?monitoring your computer:



?

• "<LSP?Info>" is variable and may specifically mention a software suite, or appear to be a meaningless acronym

Scroll through the list on the right and look for any LSPs that have been installed by third-party software. By default, the Windows OS?will have 10 values:

• MSAFD Tcpip [TCP/IP]
• MSAFD Tcpip [UDP/IP]
• RSVP UDP Service Provider
• RSVP TCP Service Provider
• MSAFD NetBIOS [\Device\NetBT_Tcpip...
• The value above repeated 5 times with additional variables at the end
• Note:?If you want to know more about which values from this key are part of Windows, please review Microsoft article 811259.

Once you've identified the third-party LSPs, determine which software placed them there.? Here is a partial list of LSPs you might run into and the software that may have placed it there:

Bigfoot Networks	BfLLR over [MSAFD Tcpip [TCP/IPv6]]
ByteMobile, Inc.	BMI over [MSAFD Tcpip [TCP/IP]]
Covenant Eyes	Covenant Eyes Monitoring over [MSAFD Tcpip [TCP/IP]]
PC Tools / Spyware Doctor	PCTOOLS over [MSAFD Tcpip [TCP/IP]]
SafeEyes	Internet Content Filter over [MSAFD Tcpip [TCP/IP]]
SpeedBit Video Accelerator	SBLSP over [MSAFD Tcpip [TCP/IP]]
VMWare	VMCI sockets DGRAM

Once you've identified the third-party software that installed the LSP, you can remove that software.? If the software is your security software, see iTunes: Troubleshooting security software issues for additional information.?

• Note:? If unsure on the origin of your LSP, you may try to locate vendor information to determine which software is responsible for the non-default value here.

Reset the WinSock key

If you are unable to identify the software that installed the LSP, you are unable to remove this software because it performs an important function for you, or you've removed this software and the issue persists, you may wish to reset the WinSock key.

1. To do so, please do the following in an administrator user:?
   
   • Windows Vista and Windows 7: Right click All Programs and choose Accessories > Command Prompt. Choose to open as an administrator.
   • Windows XP: Click Start > Run and type in cmd.
2. Enter the following command:?
   
3. Restart the computer and test the issue.
   
   • Note:? If the issue returns, third-party software may be reinserting the LSP.

This document will be updated as more information becomes available.

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Source: http://support.apple.com/kb/TS4123

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