Apparently, I have the same problem. On running the executable download and granting permission for it to make changes on my computer, the install fails with the message that the WinZip self-extractor flags the file as corrupted, incomplete or changed since it was created. Nothing further happens. Turning off my antivirus protection and firewall makes no difference. Running as administrator makes no difference. My Windows 10 system is up to date. I cleared my cookies and cache. Nothing changes. I've used TurboTax and before it QuickTax for decades and never had a problem. I spent 30 minutes on-line with a US-based tech who was unable to deal with the problem, now trying to find a Canadian support person to speak to...... and it's not easy.
