I have just installed AVAST 5.0
How many pc’s may I install it on?
Are there any special instructions on removing MSSEC.exe from my laptop in order to install AVAST 5.0?
I have installed AVAST 5.0 on my XP Home OS, may I install the second on my laptop Windows 7?
I have the license copied to a stick along with the installation program. Is this all I need? Four questions…I thank you very much. Tiago44
The license could be for one computer or for three computers?
Which is your license plan?
I think I saw 3, but I don’t know how to get back to that information. I saved the link, but it disappeared as such, and now it is a welcome page. I will go ahead and try after removing mssec.exe however, I am most interested in any information on removing it from my Windows 7…It gave a lot of problems on my XP Home tower.
Welcome to the forums, Tiago44 
Do you have Avast Free or do you have Avast Pro ?
Pro. Everything is resolved, and everything works just fine. I did not know I had the information in the downloads from AVAST. Mine is for 3 computers, I have two, so this is great. I just went ahead and removed mssec.exe from the laptop, and installed my AVAST 5.0. It works swell. I have seen online how other folks have had serious problems removing mssec.exe on XP Home. My problem was finally resolved when I installed the free version of AVAST which automatically removed the pesky, lagging behind file from it. Thank you, and I am going to post another question on chkdsk after looking through searched items. If I find the answer, then I will not post, right?! Right!
Great … glad you found the answer.