If this does not help try one of the other Computer Hope online help suggestions. It is ok to allow this program past your firewall if it's asking for permission and you trust the software vendor. If this does not resolve your issue or you have not installed any program recently try recovering Windows back to a earlier copy. If you've recently been getting errors with oovoo.exe it's recommend you unisntall or re-install any programs recently that may have generated this error. If you do not plan on using the program associated with oovoo.exe we suggest instead of disabling the process from starting up that you uninstall the program.
Therefore we suggest downloading and running the free Startup Control Panel to quickly and correctly disable this program from automatically starting up.
If this program is loading each time your computer starts it could be in any number of locations Windows use to automatically load a program. This oovoo.exe file is safe and should not be considered threat to your computer.