Hello, I am still using Avast Free 2014.9.0.2021 version. Can I update to AVAST 2015 SP1 (10.0.2208) by just click Update button? or I have to uninstall and reinstall again? I prefer update because it is easy for me due to I am not PC expert.
Yes liushine2000 you can click on the update button via the Avast 2014 GUI. After it has installed the upgrade it will ask you to restart. Restart your computer after that. After restart the Upgrade may notify you that if you want to install any optional program i.e. skydrive or such. Make sure you untick the box to not to install and follow the instruction.
Very rarely some users like me and others too have/may come across minor problems/issues if they do an upgrade and not a clean uninstallation and reinstallation. There’s two options do a repair via add/remove and/or do an uninstallation. Mostly doing a repair fixes the issues. If the repair doesn’t help simply uninstall avast 2015 via add/remove and follow the instructions, download the avast uninstall utility and run it in normal mode it will ask you that this tool will run your computer in safe mode and click ok twice and that tool will run your computer in safe mode automatically and follow instructions. Finally download and and install a fresh copy of avast. After installation it will do a quick scan. Let that scan finish and reboot your computer manually. After restart register your copy of avast.