Installation Error Code

I used a free trial version of AVG a few weeks ago.  I decided to purchase the AVG ultimate for protection…anti-virus…tune up.  I did all the necessary steps such as having registered with a password, when I took out the free trial…entered the key/code for registration…etc.  I clicked on the .exe file in my download folder hoping to install my new AVG protection program, only to have an installation error code pop up  0xe001f949.    I went back to programs and features to see if any other free version was there.  I only saw AVG, so I tried uninstalling that, but got the same error code.  Now what, I'm stuck in uninstalling as well as installing.

Hello Jay,

Sorry for the inconvenience caused.
May I know the name of Operating system installed on your PC?

Hello Jay,

Sorry for the inconvenience caused.
May I know the name of Operating system installed on your PC?