Veronica Novais 

• Go to Start -> All Programs -> Windows Updates -> Check for updates and install all Windows Updates (you may have to do this several times before no more updates are found).
• Remove any existing installations of Microsoft Visual C++ 2005 Redistributable Package (x86) from Programs and Features in Control Panel.
• Restart the computer.
• Open File Browser, navigate to C:\ProgramData\Package Cache\SDL\Dependencies and double-click 2005_vcredist_x86.exe to install it manually.
• Attempt to install SDL Trados Studio 2015 again.

If that fails the problem is probably related to you using W11 which is a far more recent version of software than Trados Studio 2015.  But see if the above helps and if it doesn't we can create a support case for you and see whether we can help at all.

Hi Paul. I googled the issue and your solution came out. Unfortunately I cannot find a 2005_vcredist_x86.exe file in the folder, nor a 2005 Redistributable Package to uninstall in the Control Panel (only later versions). Do you happen to have any other suggestions? Thanks!

Hi Paul. I googled the issue and your solution came out. Unfortunately I cannot find a 2005_vcredist_x86.exe file in the folder, nor a 2005 Redistributable Package to uninstall in the Control Panel (only later versions). Do you happen to have any other suggestions? Thanks!