Quality center in IE8

If you are having a problem of accessing quality center in IE8. Follow the below steps by opening the Internet Explorer 32 bit version

1. Navigate to Tools > Internet Options > Advanced tab
2. Scroll down to security section of Advanced tab
3. Deselect "Enable memory protection to help mitigate online attacks"
4. Restart the browser and navigate to Quality center
5. Install the activex .. you will straight away see the quality center opened without any problem

Update:

Note: 1. For doing above steps you need to Open Internet explorer 32 bit version with administration (Go to C:\Program Files (x86)\Internet Explorer and right click on Internet Explorer and run as administrator)

Update2:

After following above steps if you are still getting OTACLIENT.dll not download Error then you need to install "HP Quality Center Connectivity" plugin from Quality center addins page