Miscellaneous Update Rollup 2 issues and how to work around them

I wanted to list a few miscellaneous issues that have been found recently with Update Rollup 2 for Media Center 2005 and describe how to workaround them.  Some of these have already been described individually elsewhere, but I wanted to make it more likely that they are found in search engines by posting them again.

1.  DVB radio tuning causes a blue No TV Signal overlay

Peter Rosser described this issue and workaround in more detail in this blog post.  He lists the registry value that needs to be changed to workaround this problem until it is released in a future Media Center rollup package.  As a convenience, here is a command line that you can run to update this registry value do you do not have to use regedit:

  1. Click on the Start menu, choose Run and type cmd
  2. Run reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Media Center\Service\Video\Tuners\DVR" /v NearUnderflowCheckMillis /t REG_DWORD /d 4000 /f

Note: You can copy and paste this command into the cmd prompt by highlighting it in this blog post, pressing Ctrl + C, then right-clicking on the cmd prompt window and choosing Paste.  Make sure that you copy the entire command as it is listed above, including the space between Media and Center, and do not add any extra carriage returns in the middle of the command line or it will not work correctly.

2.  High-definition (ATSC) tuners stop working after uninstalling Update Rollup 2

Peter Rosser also described this issue in his blog, and you can find more information in this post.  Here is a set of steps that will delete the registry value that is needed to restore ATSC tuner functionality if you uninstall Update Rollup 2:

  1. Close Media Center
  2. Click on the Start menu, choose Run and type cmd
  3. Run net stop ehsched and net stop ehrecvr
  4. Run reg delete "HKLM\Software\Microsoft\Windows\CurrentVersion\Media Center\Service\Video\Tuners" /f
  5. Restart Media Center

Note: Like in the issue described above, you can copy and paste this command into the cmd prompt by highlighting it in this blog post, pressing Ctrl + C, then right-clicking on the cmd prompt window and choosing Paste.  Make sure that you copy the entire command as it is listed above, including the space between Media and Center, and do not add any extra carriage returns in the middle of the command line or it will not work correctly.

3.  Media Center will not correctly enter standby mode if the TV tuner was used prior to going into standby

This is a recently discovered regression introduced in Update Rollup 2 that we are currently working on a fix for.  Once a fix is ready, it will likely be included in the next Media Center hotfix rollup package.  The only known workaround at this time is to disable Media Center sounds by navigating to Settings | General | Visual and Sound Effects and unchecking the box labeled Play sounds while navigating Media Center.

4.  ATSC minor channels are listed incorrectly in the Media Center television guide

Peter Rosser described this issue in his blog in this post.  This is a known issue that will be fixed in the next hotfix rollup for Media Center 2005, but unfortunately there is not a way to workaround this issue in the meantime.


Comments (20)
  1. Re: 3.  Media Center will not correctly enter standby mode if the TV tuner was used prior to going into standby

    That’s a really interesting workaround.  No wonder I could never re-pro that issue that has been mentioned quite commonly in the newsgroups… turning off animations and sounds is one of the first things I usually do upon installation of an MCE setup..

    For those that have run into this issue, thanks for pointing it out.

  2. Larry J says:

    Thanks for the info "Re: Media Center will not correctly enter standby mode if the TV tuner was used prior to going into standby." Never would have guessed to turn off sounds. I’ll give it a try!

  3. Rik says:

    In my case Media Center starts up fine and all the functions work except playback of dvr-ms files. The computer freezes up after 2-10 seconds of playback. It records fine but will freeze when playing either live TV or content recorded through Media Center. This started happening after Update Rollup 2. Of course, I didn’t pay any attention to what was being updated. Its that ‘Trusted Computing’thing, I relied on it.

    Also, it appears that Media Center doesn’t use video overlay to play video. That is media center appears the same on my computer screen as it does on the TV screen. Is that normal? Players like PowerDVD just show the video on the TV and not the interface. I guess this question qualifies me as a noob?

    Thanks for clarifying a potential solution.



  4. Bob Flynn says:

    Great tip on standby.  Its worked for me on 2 MCEs that would no reenter standby after downloading the guide or after recording



  5. Larry J says:

    Tried the tip on standby. I noticed that if I was in live TV, and hit the power off button, the next time MCE woke up to do a scheduled recording, it didn’t go back to sleep. I have to make sure I do something to stop the buffering of live TV (like playing a recorded show and stopping) before it would go to sleep on its own. Is this expected?

  6. Hi Rik – The freezing issue sounds like a potential driver problem.  Can you please check the websites of your hardware manufactures and see if they have any updated drivers (video card, TV tuner, etc)?

    I’m not sure I understand your video overlay question.  Media Center is designed to look the same on a computer monitor and on a TV screen.

    Hi Larry – I am not sure if that is expected or not.  It may be the same issue related to the Media Center sounds that I described above.  Can you try that workaround and see if it helps?

  7. Larry J says:

    Hi Aaron,

    Yes, I do have sounds turned off (tip #3 above). It just seems that because buffering was going on when MCE was shut off, it resumes when the machine turns on to record, and thus has some CPU load so it doesn’t turn back off. Seems OK as long as I do something to stop the buffering, but I have only been running with sounds off for 2 days; in the past, I could go several days before it wouldn’t sleep anymore.

  8. Gary W. (aka: Hackair) says:

    Hi Aaron,

    I’ve been following the problems with (Digital Audio Service) blue screen, and I just thought I would ask, is the DVB solution listed above related?

    I don’t have either of the TV tuners that you have previously "fixed" with updated drivers. I am using 2 Hauppauge 150 tuners and I too am having the issue.

    PS: Thanks for blogging, I really apreciate the fact that so many MS employees are using this medium to communicate with us, the end user.

  9. Rik says:

    Aaron, thanks for the response. I have updated to the latest bios, (via and graphics board) and drivers and problem keeps appearing. The error is something like: process stuck in thread.

    I use the hauppauge 150 (non mce), gigabyte N66T-128D video card, on board via sound. It doesn’t matter which mpeg2 decoder I use (nvidia or powerDVD5.) Before the second roll up I had neither of those mpeg2 decoders and everything worked fine until the rollup. I guess I’ll try some of the fixes above and report back.


  10. Cathy H says:

    This may be the wrong thread. If so, I apologize in advance.

    I recently purchased a Dell XPS w/Windows Media Center 2005. It has an Angel Mpeg dual tv tuner, creative SB X-FI sound card, Pentium D Processor 820 with Dual Core Technology (2.8 800FSB), 1 GB DDR2 SDRAM, 160 GB SATA hard drive. I’m not having trouble with media center, but when I try to capture home video using either Nero Capture or Honestech VHS to DVD, I’m not getting any sound. It doesn’t seem to matter which option for sound I select, neither the Angel mpeg or the X-FI options give me sound. Help. Cathy

  11. Rik says:

    Hi Aaron,

    I went with a fresh install, with all MS updates, and am still experiencing the video freeze after 20-30 seconds of video playback (live or recorded) thorugh Media Center. This time… NO AUDIO. No extra software is installed except the MCE diagnostic tool. The overview states that the machine meets the minimum requirements but every ‘script’ test that calls the Media Center and plays video crashes the machine causing a reboot. Windows reports a thread_stuck_in_device_driver error.

    I’m not sure how to ferret this out. I loaded the latest VIA chipset unidrivers, and the latest nVidia unidrivers, and have the nVidia PureVideo mpeg2 decoder installed.

    Anybody have an idea where I should start?



  12. Hi Cathy – the scenario you are hitting is out of my areas of expertise, so I’m not sure how best to advise you to proceed.  You may want to try searching the websites for the Nero or Honestech products you are using to see if there are any known issues or workarounds for sound capture issues.

    Hi Rik – The only thing I know of to try for this scenario is updating drivers for video, TV tuner and audio on your system.  That kind of hang and the error message you found from Windows seem to indicate a device/driver issue.  Sorry I’m not able to be more helpful here.

  13. Robert Mahle says:

    Thanks for the blog but I tried "unchecking the box labeled Play sounds while navigating Media Center" for a fix and no go.  Any other things to try?

    The machine sleeps fine with the power button on the remote and when the computer comes up.  It only stops working after I launch MC and even after closing MC.



  14. VPN-User says:

    Hey, I found a workaround for the remote not working after standby (S3/S4):

    Untick all crotchets in device manager in section "Input Devices )Human Interface Devices)"->Device->Properties->PowerManagement where possible.

    The remote worked for me again when done that.

    Caveheat: You can’ t wakeup the MCE via remote anymore using this workaround.

    Please, Microsoft, fix that problem soon! I want a fully functional MCE (Going to standby using remote and also wakeup using remote as well as USING the remote after wakeup!)

  15. mike says:

    My Media Center freezes in playback of video and live video not long after starting video.  Especially playback.  Try playing the video on your windows media player.  media center-recorded shows playback seamlessley on media player.  same drivers, etc, for both displays; hence media center has a bug in spooling or whatever it does . . .

  16. Gordon Hope says:

    After the roll-up I cannot play dvd movies,the media center goe’s blue and freezes

    there is now yay out but to restart.

    I get an error message that says

    Application Failure

    A critical Media Center process has failed. Please restart the computer and try again. if the problem persists,contact your hardware manufacturer for assistance.where can I get help I built this unit myself.

  17. Hi Gordon – The workaround listed at http://blogs.msdn.com/astebner/archive/2006/02/17/534559.aspx might help solve the application failure issue that you’re seeing, so I would suggest trying that out and seeing if that helps here.

    I would also suggest trying to update drivers to see if that helps solve the bluescreen that you are describing.  You might find information in the application or system event logs on your computer to help narrow down the cause of that issue.

  18. headshot says:


    I recently installed rollup2 (complete fresh install) and i have some sound issues.

    Here in Australia, ABC2 and Channel Seven dont transmit in AC3 sound, so when i record or playback recordings from these channels, all is fine.

    The problem is the channels that DO transmit in AC3 – thats 10, 9, ABC and SBS. If i pause live tv, "rewind", or even change channel, i lose ALL sound. I have to then stop the recording or playback, then start again to return the sound.

    I SUSPECT this is a decoding issue, however i am running the same software and setup as before RU2.

    Recordings made PRIOR to RU2 all work fine, regardless of which channel they came from.

    Any hints?

    Thank you for any help.

  19. headshot says:

    oooops – sorry, i was in a rush and forgot to mention my specs…. i’m using an mce box with the latest updates, 2 aver media digital tuners, nvida decoder, standard latest drivers for on board sound card, all running into a yamaha receiver via an audio coax… thanks again for any imput….

Comments are closed.

Skip to main content