I did not install Desktop Security Rx.
I had Acronis backup installed and it is set to backup on Sundays and last week I noticed that the backup failed because I did not have the external USB hard drive active then.
So today I installed the drive and it was active but I could not write anything to it as it complained it was read only and no matter what I did I could not get write access.
They are working fine now.
One of those wonderful Windows mysteries I guess.