Q: when using overdrive Itunes is not recognised using latest version of itunes and overdrive. Error 0x800702E4. The parameter is incorrect. Opened itunes as administrator.

In iTunes under Edit > Preferences > Advanced make sure that Share iTunes Library XML is enabled.

For general advice see Troubleshooting issues with iTunes for Windows updates.

The steps in the second box are a guide to removing everything related to iTunes and then rebuilding it which is often a good starting point unless the symptoms indicate a more specific approach.

Review the other boxes and the list of support documents further down the page in case one of them applies.

The further information area has direct links to the current and recent builds in case you have problems downloading, need to revert to an older version or want to try the iTunes for Windows (64-bit - for older video cards) release as a workaround for installation or performance issues, or compatibility with third party software.

Your library and device backups should be unaffected by these steps but there are links to backup and recovery advice should it be needed.

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The older versions section of the user tip explains how to restore a pre-upgrade copy of your iTunes database.

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Your extensions aren't shown. It should be the one called iTunes Library although the fact that you have a parallel set of files with a (1) suffix complicates things. Check the Last Modified dates to see which was updated most recently. You could discard the other set and the .tmp files. If your most recently used library is the one with the (1) suffix then having deleted the other set of library files rename each file that you kept that has the suffix to remove it and the space that precedes it, then shift-start-iTunes and choose the correct file.

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