iTunes suckage with error 3259 was Windows’ fault

I was getting weird “unknown error occurred (-3259)” from iTunes for the Freakonomics podcast. There are many web solutions to this. Unfortunately, mine was not among them.

It turns out that my Windows 7 Pro 64 had set the MTU size to 1504 bytes. Why, I do not know. Solution was to run a command shell as admin and…

interface ipv4
set subinterface interface=XX mtu=1500 store=persistent

where XX is your network interface; find it with:

netsh interface ipv4 show subinterfaces

Solved! Bleah.

1 Response to “iTunes suckage with error 3259 was Windows’ fault”

  1. 1 Xander Sherry Jan 23rd, 2012 at 12:37

    Thanks! I had the same issue with the Freakonomics podcast, and none of the very generic solutions that I found for the -3259 error code worked for me either. I have jumbo frames enabled, so my MTU size was set to 9000, and adjusting it down to 1500 as you suggested immediately fixed the problem for me as well.

    Best Regards,


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