InPrivate Filtering is a feature introduced in Internet Explorer 8 which provides users with greater control over which third-parties can potentially track your browsing activities. InPrivate Filtering is turned off by default, and can be activated using the CTRL + SHIFT + F key sequence, or via the menu options. The problem is that the InPrivate Filtering feature is not automatically enabled when you open a new Internet Explorer window, and users need to enable it on a per-session basis. However, there is a registry edit to enable InPrivate Filtering by default in every Internet Explorer session.

This registry hack is a courtesy of MSDN Blogs.
Enable InPrivate Filtering by default in IE8
1. Launch Regedit.exe and navigate to:
If the above branch or its parent does not exist, you need to create the keys manually.
2. Create a new DWORD value named StartMode
3. Double-click StartMode and set 1 as its data
Registry Fix
Download inpriv-filt-enable.zip, unzip and extract the files to a folder.
Run the file inpriv-filt-enable.reg.
Related Posts
- Using ActiveX Filtering in Internet Explorer 9
- Register Internet Explorer (InPrivate) With Default Programs in Windows 7 and Vista
- How to Start Internet Explorer 8 in InPrivate Browsing Mode by Default
- Start Internet Explorer 8 in InPrivate Mode Using the Start Menu Internet Icon
- Add “Open in InPrivate Window” Option to the Right-Click Menu for Internet Shortcuts (.URL Files)
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Okay Ramesh, some of us are only users, not programmers, so:
1) What the heck is a D Word value and how do you create it?
2) How would you “create the keys manually”?
3) How do you “set 1 as it’s Data”
4) Why do you then list “Registry Fix” , is that what the download beneath it is?
5)After the download, do I open a NEW file, or extract it to any folder to use it?
Could you be a bit more ambiguous, especially when I’m going to be messing with my Registry?
@Mark, the page you’re looking for is here:
http://www.winhelponline.com/blog/how-to-start-internet-explorer-8-in-inprivate-mode-by-default/
Enable both of these fixes, for the most complete InPrivate browsing sessions.
@Mark: That’s not what the fix does. It enables InPrivate *Filtering* by default, not InPrivate Browsing.
This registry entry did not make IE8 InPrivate browsing the default IE8 browser. Was that the intent? If so, it did not work in my Windows XP Professional PC.
[...] I’ve been playing with the beta of Internet Explorer version 9 and as with most betas there is stuff to like in it, with the occasional “why did they have to change that”. Certainly it is faster, and all the tests show it is a lot more complaint with standards – some of which are still emerging. Dragging a tab to the task bar to make a short-cut to a page (complete with support for jump-lists) is neat… …I expect more accusations that Microsoft is half hearted over In-Private filtering – streamlining has made it less visible; it still can’t download a block-list from a a central service and still doesn’t stay turned on without going to the registry. [...]
@Ramesh you are a legend! thank-you very very much. IE8 has so many wonderful features that i switched back to it from my exile ;) to FF ….but it was this not-enabled-by default aspect that was a bit odd on MS’s part.
thanks again! :D
THANK YOU, it worked perfectly. Why not having this option at the first place? Easy to understand why it is nevertheless a real frustration if we do not wnow how.
THANKS again