I just installed Opera 47.0. After using it for a day I decided to uninstall mozilla firefox. I use microsoft outlook 2010 for reading email. Ever since I uninstalled firefox, if I click on a hyperlink in an email in outlook, I get the following message: "Links do not open: This operation has been cancelled due to restrictions in effect on this computer." Does anyone know how I can fix this? Opera is set as the default browser.
Outlook might have its own settings.
Check default browser again in Control Panel. Check also if Opera is set to open http and https protocols.
Do you have any anti-malware programs installed that use white-listing to permit opening a link? If so, check it to make sure Opera is replacing Firefox in that list.
Everything with file associations is set correctly and the security software is set correctly.