ITunes registry error/CD-DVD not being recognized

This is what worked for me.....and how I got to be in this problem.

Out of the blue I guess, didn't really notice, my CD drive vanished, no longer appeared in the "My Computer" screen. The solution I found at that time was to delete the upper and lower registry filters. Yeah, that worked, CD drive back. What I was not aware of was that deleting those filters lead to the itunes registry messages that everybody is refering to, along with the inability to burn a CD in Itunes. Uninstall/reinstall was no help.

The solution:

Follow the directions in this link:
http://support.apple.com/kb/TS2372?viewlocale=en_US

Follow it to the letter until step 11. At step 11 (step #'s refering to the XP instructions) it states to delete the lower filter, which I had done previously so it was not present, go on to step 12.

Step 12 says to right click on UpperFilter, which I had also deleted. The trick here is to ADD IT BACK IN!! Do this by right click on the right side of the Regedit screen, select "New", select "Multi-String Value", name it "UpperFilters". Your Regedit window should now look exactly like the picture in the instructions link. Now continue with step 12, modify your new "UpperFilters" by right clicking on it. Since you just added it, there will be no value data to delete so step 14 can be ignored. Enter value data per step 15 & hit enter. Click ok, reboot and you should be good.

I just did this tonight and after rebooting my CD drive was still visible and working, Itunes did not give me any errors when loading & I was able to burn a CD with Itunes.

Good luck, I hope this helps. It was ******* me off and I suspect others as well.

Bingo! My registry showed no filters on windows XP. By adding the upper filter and following the instructions itunes now works perfect.

This issue is common amongst many forums and tech support centers amongst the industry; affected by many products primarily iTunes, especially common within Vista which usualy induces a corrupt registry; the following script inserts a manipulated registry block which should result in the ascertainment of the desired result. However, it is highly recommended that the registry is exported (backed up) towards a viable location upon your hard drive.
Hence, when the drive disappears, try this:

Create a text file with NOTEPAD containing the following data exactly as below and name it FIXCD.REG
You should have 3 boxes on the bottom in NOTEPAD.
1)Filename : fixcd.reg
2)Save as type: all files
3)Encoding: ANSI
If you do not change it from txt type to All files type, then the file will actually be fixcd.reg.txt, this won't accomplish the desired result

Double click on the file and say yes to the merge into registry question.

---- Use text after this line, contents of FIXCD.REG -----
REGEDIT4

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}]
"UpperFilters"=-
"LowerFilters"=-

[-HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Cdr4_2K]

[-HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Cdralw2k]

[-HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Cdudf]

[-HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\UdfReadr]

------------ Use text before this line -------------------

i followed the instructions in"itunes8 for windows xp:troubleshoot cd issues caused by device filters"to a T.i did backup my registry first. this did not do the trick until someone suggested uninstalling and reinstalling itunes 8.then i was ok. thanx so much. mainchad

i followed the steps in this sort of and then reinstalled itunes (for the zillionth time) and now its worked! was all to do with deleteing the lower filters and modifying the uppers. thanks again!!