Can't Register

Hi;
I’ve been a free Avast user for many years, always updating the registration key. Somehow in the last month, I’ve been running a free trial of Avast Pro (not sure how that happened),…and it has expired. I’ve received a new license key,…but I have no place to insert it. I click on Maintenance,…but the only option is “Subscription” as opposed to “Registration”. What do I do? Thanks

ps…I downloaded a copy of Free Avast,…just in case I need to do that,…but when I click on it to install it says “Error 20000008 - Not enough user rights”

Pat

first uninstall avast PRO….from safe mode http://www.avast.com/en-no/uninstall-utility

then install free again and register http://www.avast.com/en-no/download-software

Just wondering why safe mode. Thanks for the speedy reply BTW!
Pat

read the instructions on website…
it has to do with avast self protection…

Super,…thanks Pondus. I’ll post back with the results!
Pat

Okay,…I uninstalled the program,…and it appears to be gone,…but when I try to install the free avast,…it still says “Error 20000008 - Not enough user rights”. So what now?
Pat

do you have any other security programs installed?

Only Comodo firewall.