Make sure your Windows OS is up to date. For installation issues, make sure you are following these points:

• You have the administrator rights on the profile you are installing TurboTax on. 
• You are not trying to install on a cloud. 
• Turn off your antivirus software and Windows Defender before installation & be sure to turn it back on after. 
• Try this link to download TY25: https://intuitglobal.intuit.com/downloads/CanadaTax/2025/dls/TurboTax_2025.exe

If the error persists, we suggest you contact our product support by phone. 

I find it takes quite a while to actual open the software after it checks for updates. It may be that you are not giving it enough time to get open.