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Windows 7 Service Pack 1 fails with error code 0x8004a029

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When installing Service Pack 1 on Windows 7 installations, you may enounter the following error code in the \Windows\Logs\CBS\CBS.log:  0x8004a029

The log snippet will look similar to the following:

2011-02-21 18:56:58, Error                 CSI    000006e1 (F) Done with generic command 60 (0x0000003c); CreateProcess returned 0, CPAW returned S_OK
    Process exit code 41001 (0x0000a029) resulted in success? FALSE
    Process output: [l:73 [73]"Trying to install vpcnfltr ...
..failed. Error code: 0x8004a029.
"][gle=0x80004005]

This is due to the filter limit in Windows 7.  To resolve this, do the following:

Option 1

Windows 7 is hard coded to allow 14 filter drivers, but the following registry sets the limit to 8 by default.  You can adjust the amount up to 14 or delete this key and it will be set to max of 14.

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Network\MaxNumFilters 

Option 2

Remove some filter driver from ncpa.cpl -->  Chose network Properties --> Select and filter --> Uninstall

**Note** Not all networking filters are listed under ncpa.cpl, so application may need to be completely uninstalled (i.e. personal firewalls)

--Joseph

Comments

  • Anonymous
    January 01, 2003
    Are you highlighting the network key Jim?  It's located in that portion of the hive.

  • Anonymous
    January 01, 2003
    Sorry Anshul, does this have something to do with SP1?

  • Anonymous
    January 01, 2003
    @Pats, glad that worked for you.

  • Anonymous
    January 01, 2003
    If you're seeing this problem Ed, check to see if you already have more than 14 filters.  If you do, then you need to remove some to get it to work.

  • Anonymous
    January 01, 2003
    Glad to help Craig.

  • Anonymous
    January 01, 2003
    The comment has been removed

  • Anonymous
    January 01, 2003
    Start > Run > regedit.exe > navigate to the key above

  • Anonymous
    January 01, 2003
    @Ping, if you highlight the Network hive you should see a MaxNumFilters value inside that branch of the registry.

  • Anonymous
    January 01, 2003
    @GKH;  That's true for your machine.  However, CCS isnt always under CCS1, it can be any number depending on the installation.   @Andre;  Thanks for the FixIt link, I didnt realize the team put that out.

  • Anonymous
    January 01, 2003
    Glad I can help out a little here and there :)

  • Anonymous
    January 01, 2003
    Here is an automated FixIt for the issue: support.microsoft.com/.../2530477

  • Anonymous
    January 01, 2003
    Nope Ed, thats all on me.  I need to stop fatfingering things as I type them.  The proper applet is ncpa.cpl.  I couldnt have been more off if I had tried.  Thanks for picking that up.

  • Anonymous
    February 22, 2011
    Option 1 has solved my issues.  Thanks a lot for the info!

  • Anonymous
    February 25, 2011
    It doesn´t work, still have the same problem

  • Anonymous
    February 26, 2011
    Can you please explain to me how I get to HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlNetworkMaxNumFilters? Please email me the answer, ericv1984@gmail.com

  • Anonymous
    February 27, 2011
    I am using Windows 7 and MaxNumFilters is not there.

  • Anonymous
    March 08, 2011
    I don't see nacpl.cpl. Did a search. Nothing. Is it hidden?

  • Anonymous
    April 23, 2011
    Really you must think this will work right you're a microsoft employee. Sorry to inform you this method doesn't work

  • Anonymous
    April 28, 2011
    Thanks alot !!!! Solved my problem to update this from 8 to 14.

  • Anonymous
    May 30, 2011
    Hi Joseph, I just want to know what if the MaxNumberFilters is not in the registry under Networking hive. I'm pretty sure I went to the correct address but the folder is not there. Any suggestions?

  • Anonymous
    July 31, 2011
    what you write, is elsewhere: P check here: HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlSet001ControlNetworkMaxNumFilters (reg_DWORD) (8)

  • Anonymous
    August 30, 2011
    Worked like a charm. SP1 wasn't my issue, it was Virtual PC that failed but your solution applied for that as well. Thanks a mill!

  • Anonymous
    July 16, 2012
    well tried them all and some omre others, but not working. Any other ideas...?

  • Anonymous
    September 12, 2013
    When i remote connect one system to another is message " THe stub  recieved bad data" I could not one system to other through net limiter 3.0

  • Anonymous
    April 03, 2015
    Many thanks for this tricky fix!!