Uninstalling Sophos SafeGuard 5.50.8

Hi,

Bear with me as I'm a newbie and not of an IT background, although I am reasonably IT literate :smileyhappy:

I have Sophos SafeGuard 5.50.8 installed on my work's laptop and this has been fine for 12 months but for the past couple of months it does not recognise my usual User Name, Password & Domain when signing in. It's usually the password that it doesn't like, which always results in a 'Challenge / Response' with my IT provider on the server. This started off every so often but is now happening daily. As a result, I cannot switch the laptop off overnight at the moment otherwise I have to ensure my IT guy is available early the next morning to complete the 'response' following my 'challenge'. You can probably appreciate that this is very frustrating and all I want to do is uninstall Sophos, which leads me to:

1) Is there anyway to fix this problem ? I am not sure how I find what version of Sophos SafeGuard 5.50.8 I'm using and whether I need to run an update ? Does this need to be run on the server or my local machine ?

2) How do I remove Sophos SafeGuard 5.50.8 and are there any complications or things I need to know before removing ?

Thanks in anticipation

Phil