Stock Investor Pro 4.0 Is Now
Windows 8 Compatible

With the November 30, 2012, release of Stock Investor Pro 4.0, we are shipping additional support files that make the automatic update functionality compatible with Microsoft Windows 8. The first time you run Stock Investor Pro 4.0 after 11/30/2012, assuming you have the automatic updates options enabled, and the program finds newer data, you may be prompted to install files in addition to the normal data update. These files are Microsoft Visual C++ 2010 SP1 Redistributable (x86) and Microsoft .NET Framework 4 Full. If you do not already have these files installed on your PC, you will receive the following notice:

Please note that these are legitimate files being downloaded from legitimate, safe websites. Furthermore, you must have these files on your PC, no matter what version of Windows you are running, in order for the automatic updates to function properly going forward. Therefore, click Install and InstallShield will download and install these files. Also, even though the C++ Visual 2010 Redistributable is 32-bit (x86), it will still work with 64-bit (x64) systems.

If you run across an error while installing these files, you have multiple options. You can close the program and download and install the program/data file from the Stock Investor downloads page of

You may, again, be prompted to download and install the .NET Framework 4 and Visual C++ 2010 SP1 x86 Redistributable files. If this option also fails, you can try downloading the files directly from Microsoft:

Microsoft Visual C++ 2010 SP1 Redistributable Package (x86):

Microsoft .NET Framework 4 (Standalone Installer):

After installing these files during the Stock Investor Pro update installation or manually, you may receive Windows Update notifications to download updated versions or security updates for these files. We suggest you allow Windows to download and install the available updates if they are found.

If you are still unable to install the .NET Framework 4 or Visual C++ 2010 SP1 Redistributable, or are unable to update Stock Investor Pro, you can contact AAII Tech Support via email or the Stock Investor web feedback form or you can call us at (800) 428-2244, Monday to Friday, 9:00 a.m. to 5:00 p.m. (Central).