Reset IE Homepage Settings.

Here are few steps to reset the IE homepage settings.

Through Registry Editor.
1. Open Registry Editor.
2. Proceed with the following steps to enable homepage change.
  * Make the DWORD HomePage to 0 under HKEY_CURRENT_USER\\Software\\Policies\\Microsoft\\Internet Explorer\\Control Panel
  * Make the DWORD NOSaveSettings to 0 under HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer
  * Make the DWORD HomePage to 0 under
HKEY_LOCAL_MACHINE\\SOFTWARE\\Policies\\Microsoft\\Internet Explorer\\Control Panel
3. Inoder to disable change all the above values to 1.

Through Group Policy:
1. Open Group Policy.
2. Go to the Location: User Configuration\Administrative Templates\Windows Components\Internet Explorer.
3. On the right panel, select "Disable changing homepage settings" and make it to enable and select the particular url.
4. If you want to enable, select disable.