Question about SanDisk Sansa e250 MP3 Player

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It is not possible to obtain device's certificate. e250

This is the error message I receive when I try to sync wma files to my player through windows media 11. These files worked yesterday. :-(

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  • rdemass Nov 09, 2007

    When I try to transfer songs fron Rhapsody to my sansa e250 I keep getting errors saying it can't get devices certifcate. Can I retreive this certificate?



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WMP11 is not without its glitches but if you want a good sync without many problems use WMP10 it has many more capabilities and upgrades than the 11 considering its relatively new i also have the Sansa e250 surprinsingly enough it holds 4 gigs not 2

Posted on Mar 31, 2007


I've noticed this happens on my iriver clix when the date/time on the device is incorrect.

Posted on Mar 31, 2007


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You have to refresh the synchronization with Windows Media Player every 30 days or so. Normally this message only appears for Rhapsody-downloaded tracks, nut Microsoft now requires that you sync the device every so often just to make sure any wma files have the correct license on them. Convert those songs to Mp3 format, and you will not have any problems like this one.

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