The error that you have mentioned can emerge even after a successful install of iTunes. Patrons have tried uninstalling and reinstalling iTunes but the iTunes error 13026 will generally endure. The solution to decipher iTunes error 13026 is to minimally close iTunes and find the file called iTunes Genius.itdb and delete this file. Then when you reopen iTunes you should be thriving and no longer see the iTunes 13026 error. This error is known to influence users of Windows XP and Windows Vista. If you are having dilemma finding the file iTunes Genius.itdb look in this folder but replace the "username" with your own username on your PC.
C:\Documents and Settings\username\My Documents\My Music\iTunes
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