If you want to have access to your extensions or toolbars while using the InPrivate browsing mode, the follow the below procedure.
NB: It should be noted that some toolbars/extensions have the ability to record your browsing activities!
Click on Tools > Internet Options > Privacy tab
In the "InPrivate" section, clear the " Disable toolbars and extensions when InPrivate Browsing starts" checkbox.
Validate with the OK button.
Method 2 - Via the group policy editor
Open the Run menu
Type gpedit.msc and press Enter.
Go to Computer Configration > Administrative Templates > Windows Components > Internet Explorer.
Double click on Privacy
Double click on Prevent the computer from loading toolbars and Browser Helper objects when InPrivate Browsing starts.