Modify the user agent string sent by Internet Explorer by editing the windows registry. Internet Explorer sends a user agent string containing information about the IE version, OS version and some other information. You can edit it to add your own personal touch or to personalize your visit to a webpage. An example for a user agent Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727) if you carefully look at this string you can find that MSIE 6.0 denotes Microsoft Internet Explorer 6.0 and Windows NT 5.1 shows the kernel version of a Windows XP operating System.
Backup your Registry
Since this tweak involves editing the windows registry it is strongly recommended that a backup is made before making changes. Go to Start -> Run or [windows key] + R type regedit and press enter, the windows registry editor opens up. Go to File menu -> export, navigate to a location, give filename and click. The file is saved with a .reg extension. If you want to restore from this backup form the registry editor go to File menu -> Import and navigate to the location where you saved the file, select it to restore it.
Modify IE’s User Agent String
Open Windows Registry Editor by executing regedit. Navigate to the following location
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\User Agent\Post Platform
Right click on the right pane and create a new String Value. Give it a name, leave the data empty. The string name given will be appended to the end of the already existing user agent. If you want to remove certain values which have been added to the user agent string by the software you installed navigate to
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\User Agent\Post Platform
This location might not always exist but if its there you can go there to find some String Values. You can delete/modify/add values and it’ll be inserted in between. You can see the changes below.