0x80040155 is "Error: Interface not registered" and implies some component
is now broken or badly installed to your system.

What software was updated/removed/added before this error started happening?

--
Speaking for myself only.
See http://zachd.com/pss/pss.html for some helpful WMP info.
This posting is provided "AS IS" with no warranties, and confers no rights.
--
"wood2851" <wood2851@discussions.microsoft.com> wrote in message
news:ABBA966B-3E55-4E01-93E6-A2234101A9B5@microsoft.com...
> zachd do you have another solution to the media center for the error
> 80040155
> my media player workds fine but the media center says i have no songs in
> the
> library but they are listed. they just won't play. the regsvr won't even
> work
> for me .
>
> "zachd [MSFT]" wrote:
>
>>
>> Please note that running "regsvr32 wmp.dll" on Vista breaks a number of
>> things.
>>
>> You would have to at the least reset all the following. Please try to
>> avoid
>> registering wmp.dll on Vista. Thanks!
>> ==
>> Windows Registry Editor Version 5.00
>>
>> [HKEY_CLASSES_ROOT\CLSID\{CD3AFA70-B84F-48F0-9393-7EDC34128127}\ProgID]
>> @="WMP11.AssocFile.ASX"
>>
>> [HKEY_CLASSES_ROOT\CLSID\{CD3AFA71-B84F-48F0-9393-7EDC34128127}\ProgID]
>> @="WMP11.AssocFile.WMZ"
>>
>> [HKEY_CLASSES_ROOT\CLSID\{CD3AFA72-B84F-48F0-9393-7EDC34128127}\ProgID]
>> @="WMP11.AssocFile.AIFF"
>>
>> [HKEY_CLASSES_ROOT\CLSID\{CD3AFA73-B84F-48F0-9393-7EDC34128127}\ProgID]
>> @="WMP11.AssocFile.AU"
>>
>> [HKEY_CLASSES_ROOT\CLSID\{CD3AFA74-B84F-48F0-9393-7EDC34128127}\ProgID]
>> @="WMP11.AssocFile.MIDI"
>>
>> [HKEY_CLASSES_ROOT\CLSID\{CD3AFA76-B84F-48F0-9393-7EDC34128127}\ProgID]
>> @="WMP11.AssocFile.MP3"
>>
>> [HKEY_CLASSES_ROOT\CLSID\{CD3AFA77-B84F-48F0-9393-7EDC34128127}\ProgID]
>> @="WMP11.AssocFile.MP3"
>>
>> [HKEY_CLASSES_ROOT\CLSID\{CD3AFA78-B84F-48F0-9393-7EDC34128127}\ProgID]
>> @="WMP11.AssocFile.M3U"
>>
>> [HKEY_CLASSES_ROOT\CLSID\{CD3AFA7B-B84F-48F0-9393-7EDC34128127}\ProgID]
>> @="WMP11.AssocFile.WAV"
>>
>> [HKEY_CLASSES_ROOT\CLSID\{CD3AFA83-B84F-48F0-9393-7EDC34128127}\ProgID]
>> @="WMP11.AssocFile.WAX"
>>
>> [HKEY_CLASSES_ROOT\CLSID\{CD3AFA84-B84F-48F0-9393-7EDC34128127}\ProgID]
>> @="WMP11.AssocFile.WMA"
>>
>> [HKEY_CLASSES_ROOT\CLSID\{CD3AFA88-B84F-48F0-9393-7EDC34128127}\ProgID]
>> @="WMP11.AssocFile.AVI"
>>
>> [HKEY_CLASSES_ROOT\CLSID\{CD3AFA89-B84F-48F0-9393-7EDC34128127}\ProgID]
>> @="WMP11.AssocFile.MPEG"
>>
>> [HKEY_CLASSES_ROOT\CLSID\{CD3AFA8F-B84F-48F0-9393-7EDC34128127}\ProgID]
>> @="WMP11.AssocFile.ASX"
>>
>> [HKEY_CLASSES_ROOT\CLSID\{CD3AFA90-B84F-48F0-9393-7EDC34128127}\ProgID]
>> @="WMP11.AssocFile.ASX"
>>
>> [HKEY_CLASSES_ROOT\CLSID\{CD3AFA92-B84F-48F0-9393-7EDC34128127}\ProgID]
>> @="WMP11.AssocFile.ASF"
>>
>> [HKEY_CLASSES_ROOT\CLSID\{CD3AFA93-B84F-48F0-9393-7EDC34128127}\ProgID]
>> @="WMP11.AssocFile.ASX"
>>
>> [HKEY_CLASSES_ROOT\CLSID\{CD3AFA94-B84F-48F0-9393-7EDC34128127}\ProgID]
>> @="WMP11.AssocFile.WMV"
>>
>> [HKEY_CLASSES_ROOT\CLSID\{CD3AFA95-B84F-48F0-9393-7EDC34128127}\ProgID]
>> @="WMP11.AssocFile.WVX"
>>
>> [HKEY_CLASSES_ROOT\CLSID\{EE4DA6A4-8C52-4a63-BBB8-97C93D7E1B6C}\ProgID]
>> @="WMP11.AssocFile.WMD"
>> ===
>>
>> --
>> Speaking for myself only.
>> See http://zachd.com/pss/pss.html for some helpful WMP info.
>> This posting is provided "AS IS" with no warranties, and confers no
>> rights.
>> --
>> "Bozar" <Boltizar_ ~nospam~@msn.com> wrote in message
>> news:1C44426B-2250-487D-988C-71FFFD6005CF@microsoft.com...
>> > Well with no ones help on my thread here, I did fix the problem, Some
>> > one
>> > else back in early September had a similar problem, they were directed
>> > to
>> > this address,
>> > http://support.microsoft.com/kb/938928, it was close but not my
>> > problem,
>> > so
>> > I type in "Windows Media center Audio error" in the serch box took me
>> > then
>> > to
>> > me to TechNet Forums with others having the same erorr 80040155 and
>> > there
>> > is
>> > a hot fix that worked great for me.
>> > In Accessories, Right click on Comand Prompt Run as administrator, in
>> > the
>> > command prompt, type or paste C:\WINDOWS\system32>regsvr32.exe wmp.dll
>> > and
>> > (make sure to put the space in between 32 and wmp)
>> > An info box will appear. Click Ok then restart.
>> > Bingo! it worked,
>> > Thanks to TechNet Forums.
>> >
>> >
>> > --
>> > Truckin'
>> >
>> >
>> > "Bozar" wrote:
>> >
>> >> Windows Media Center on Vista Home Premium, When I access my Music
>> >> library and
>> >> when I pick a song or album to play, It gives me a error, "unknown
>> >> audio
>> >> error has occurred 80040155." now video's play fine with there music.
>> >> CD's
>> >> will not play either, I get the same error. Windows Media Player 11
>> >> plays
>> >> fine for music and videos.
>> >> --
>> >> Truckin'
>>
>>
>>