You might be having two or more VPN software installed on your system.Why I Am Having Hotspot Shield Not Working Error ? There can be several reasons which causes this error to occur but I have mentioned some most common's one here : So to solve your problem I have mentioned the reason which causes this error to occur and ways to fix it. However on some system people are not able to install it properly due to some reasons.
It also saves your internet data up to a large extent. Also Hotspot Shield Compression saves bandwidth and thus speeds up your browsing speed.