There is a fact that most of these error 403 problems are curable as they arise because of some silly mistakes we do in Windows. Thankfully, the methods of repairing the error 403 issue shouldn't prove to be difficult to execute and we will guide you in the following paragraphs. If you can't fix the error 403 problems manually, you may take advantage of an automatic repair tool.
To uninstall a program from Windows XP:
1. Navigate to the Windows start menu by clicking on the "Start" button.
2. When the Start Menu opens select "Settings", then click on "Control Panel".
3. In the Control Panel window click on the "Add or Remove Programs".
4. In the "Add or Remove Programs" window select the program you want to uninstall and click in the "Change/Remove" button.
1.Press Win + R, type service.msc in the search box, clicking OK.
2.On the Service window, find the service you want to uninstall, for example Application Experience, double-click on it and copy its service name - AeLookupSvc.
3.Press Win + R, type cmd in the input box, press enter.
4.Type sc delete AeLookupSvc, press enter.
5.Press F5 to refresh to service window, you will find AeLookupSvc is disappeared now.