Windows 7 Can't open .zip file - 'Windows found that this file is potentially harmful.'

It seems like you're encountering issues with downloading and opening .zip files on Windows 7 Professional, where you receive a message indicating that the file is potentially harmful. This warning typically appears when Windows recognizes a file as a potential security risk. Here are a few steps you can take to address this issue: 1. Check the File Source: Ensure that you are downloading the .zip files from trustworthy sources. Files from unknown or unverified websites can pose security risks. 2. Disable SmartScreen Filter: The SmartScreen feature in Windows 7 might be flagging the .zip files as potentially harmful. You can disable SmartScreen temporarily to see if it resolves the issue. 3. Scan for Malware: Perform a full system scan using your antivirus software to check for any malware or malicious programs that could be causing the warning. 4. Change Security Settings: Adjust the security settings in your browser and Windows Firewall to allow .zip files to be downloaded and opened without warnings. 5. Windows Update: Ensure that your Windows 7 system is up to date with the latest security patches and updates from Microsoft. If you've tried these steps and are still facing issues, it might be helpful to provide more details about the specific programs you've used or steps you've taken to address the problem. Feel free to share more information so we can assist you further.