Hi Minh,
Please perform the following operations:
1. Create the C:\Program files\AutomatedQA\TestLog folder and try to install TestComplete. The TC8installog.txt file will be created in this folder. Zip this file and attach to your post.
2. Launch Registry Editor (type regedit in the command prompt window) and export the HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall registry branch (right-click Uninstall and select Export). Zip the reg file and attach to your post.
3. Specify the list of extensions you are installing (or post a screenshot with the expanded Extensions node displayed in tc_features.png).
If you don't want to share the files on the forum, you can
send them to us.