KB2839299_2003 derived fltMgr upgrade that it is not...

[modnar]

You can try it if you are frustrated with XP fltmgr that bogs down internet browsing with many mini-filters installed.

In KB2839229 for WinXP there are just kernel files, in KB2839229 for Win2003 there is also a fltmgr.sys, which is updated version build5107, from before build3959.
You can replace WinXP_SP3 build 5512 with this one, but ONLY fltmgr.sys (overwrite) and you preserve fltmgr service settings XP-factory.
Works well so far, without hitches.

I used Hiren's Boot CD to perform replacement in my XP_uSP4 (in my installation locations are: Windows/system32/drivers, Windows/ServicePackFiles/i386 and Windows/system32/dllcache).

UPDATE

The 2003 version still causes hitches which show the next day (after shutdown), no matter how many restarts I did the first day...

ReactOS also doesn't have a working version of fltmgr... For now I have restored XPSP3 fltmgr and put an empty place in GroupOrderList between the minifilters (e.g. A with tag=4, 5 none, B with tag=6).

Edited 1 hour ago by modnar
Update

[Start Me Up]

I can't find much information on KB2839299. Do you have a little bit extra on what was changed in fltmgr.sys?

Edited yesterday at 01:16 PM by Start Me Up

[user57]

if you want to give a installer to us you can make it by using this project file

installer.zip

you know about the kb-upgrades ? they are compressed like a zip file (Intrapackage Delta compression or IPD) - the most common unzip files like winzip, winrar, 7z can unpack this format

inside is useally a .inf file 

and that .inf file contains both the registry and the file entrys

typically they are easy to find because they useally come over this 2 entrys:

CopyFiles    = filesnumber1
AddReg       = regnumber1 

then somewhere is a string called filesnumber1 and there are the entrys

the same goes for regnumber1

 

 

so the common idea is to read out that information (what is stored in that .inf file) and combine more kb-upgrades in 1 upgrade - a problem with that is that this .inf engine is like a script its not very fast - so its not very good for many entry´s

so i came up with a own installer that can do the same thing (but many times faster, having full control of the code, dont need other things to be installed first)

 

so if you want to make us a file that install that fltmgr.sys you can make it with this project file - might be something for you

 

[Start Me Up]

6 hours ago, user57 said:

you know about the kb-upgrades ? they are compressed like a zip file (Intrapackage Delta compression or IPD) - the most common unzip files like winzip, winrar, 7z can unpack this format

They can also be extracted without third party tools:

1. open a command prompt (cmd.exe)
2. drag and drop the kb...exe into the command prompt window
3. add " -x" or " -c" (c with old updates, x with new updates) to add the command line parameter
4. hit [enter]

Edited 4 hours ago by Start Me Up

[modnar]

On 12/19/2025 at 2:15 PM, Start Me Up said:

I can't find much information on KB2839299. Do you have a little bit extra on what was changed in fltmgr.sys?

In Win2003 only some security enhancements were added from b3959 to b5107; it was somehow possible to bypass it but with local access, not over internet from what I remember.

 

7 hours ago, user57 said:

if you want to give a installer to us you can make it by using this project file...

I have unpacked it using Universal Extractor.

While it is faster than XP's fltmgr, it seems like even with XP settings the 2003 one is again hitching...

The only way to make XP one better is to place it on Tag=4 as it was in XPSP2, but that setting is not secure - means that any false driver could render it useless when it gets installed in boot order in front of it (Tag=1)...

I really don't know what else to try anymore...