Music and content are grayed out on iPhone after iOS upgrade

I'm in the same boat as well! Some of my songs are greyed and some are not, since I've upgraded it's tried restorning my iphone 3 times. After it restores it resets my phone and then I get a pop up asking me to restore it yet again as it was interrupted during the restore process, it gives me an option to cancel, restore, or delete the backup file.....not sure it this has something to do with why I can't access my music. Any help would be appreciated!

I've tried restoring it twice since I posted and it's still greying out my music.....all my songs are showing on my iphone they are just greyed out and I cannot play them. This is really frustrating :-(

Any news on resolving this as I have the same problem on an iPad

Try to resync your device with your Mac or PC pressing the sync button near your device name in iTunes.

Don't stop it manually.

And be sure your device and your Mac or PC are in the one WiFi network during all sync process. Or sync via USB cable.

This solved the same problem with my iPhone and iPad.

I corrected my problem by removing a few songs that became corrupted from the "upgrade" (have no clue what happened). The restore wasn't able to complete correctly because itunes was freezing on those songs. Once I removed the problem files from my library I was able to restore it. However, the only way I could get the "grey" songs to sync was to manaully add the songs from my library to the iphone (by copying and dragging the files to my iphone). Some songs still appeared as grey in itunes (where it shows all songs listed on your phone) but I went to my phone and I am able to play them now with no problems. I would suggest to try and manually add them and see if that helps!

I'm not sure if you've been successful with playing music on your iPad yet but here's what worked for me. This morning I discovered that my whole music library was 'greyed out' and nothing would play at all after installing the shiny new (flawed and bugged) IOS 5. After unsuccessfully trying a hard reboot (holding the sleep and home buttons for about 10 seconds, ignoring the power off prompt and letting the iPad completely shut down, operating system incuded) then everything bar a complete wipeout and restore to factory defaults I tried this and it worked:

First I synched my iPad with my iTunes via the USB cable. Then I unticked the 'synch music' tab, which will basically delete all of the music from your iPad on the next synch which I then did. Then I ejected the iPad from iTunes and performed a hard reboot (see above). To power up again hold the sleep button down for a few seconds and you'll see the Apple logo. it should then take about 20-30 seconds to reload and be ready to use. I then reconnected to iTunes, went to the music synch tab. Ticked the box to put my entire music library back on the iPad and synched again. Depending on how much music is in your library or how much you put on your iPad it could well take hours. I've only got about 5GB and it took over 2 hours. Anyway after it had synched and put all the music back on the iPad, I tried and all of it is now longer 'greyed out' and plays like it's intended to.

If you haven't been successful yet then it's worth a try. It may well work for iPhones too if the music has already been backed up on iTunes. Hope this helps.

Thanks man - this solved the problem for me as well on my iPhone. Now my 14 gigs of music can once again be played out from my iPhone.