BitComet can be downloaded from the official website by:
1) left-click the download icon on the web page to download the latest version.
Or 2)Download previous versions from the BitComet Archive. Right-click on the version and package type you wish to download, and select “Save target as…”.
Navigate to the location where you saved the setup file, double-click it to start the installation.
Select the menu items and shortcuts that you wish to install (see snapshot). Click on the “+” button next to “Browser Integration” to view and control BitComet options to be added to your web browser. The default selections are preferred by most people. Click “Next” to continue.
When you see this screen, BitComet has been successfully installed. You have the options to:
(You must already have an archive extraction program installed and know how to use it.)
The archive contains two .exe files: BitComet_Win9x.exe and BitComet.exe.
You will only need to install one of them, and you can delete the other one to avoid confusion.
You are expected to know your way around your computer, files, archives and associated terminology. We do not offer support or help for this version. Hence please don't use the green version if you're not fully familiar with it.
Simply download and install the desired version right over your current version, as stated above.
Tip: The previous (old) Task List and options/preferences remain unaffected by this process.
(If you wish to perform a “clean” install, removing all tasks and options, then uninstall the old version using “Add/Remove Programs”, and delete the installation directory (default is C:\Program Files\BitComet) with all of its contents. Then install the new version as above.)
User Account Control (UAC) is a technology and security infrastructure introduced along with Microsoft's Windows Vista and Windows Server 2008 operating systems and also present in the subsequent versions such as Windows 7. It aims to improve the security of Microsoft Windows by limiting the access rights of the software applications running in Windows to standard user privileges, by default, until an administrator authorizes an elevation.
Because running the BitComet installation package needs administrator privileges, in certain cases, unsuitable combinations between certain UAC settings and the user account type, may lead to installation failure.
As a basic guideline you should keep in mind that if you have disabled UAC then you should run the BitComet installer under administrator account to make sure that the process won't fail.
Read this to learn more about the installation package and UAC.