If you are facing issues with inserting pictures in emails using the Firefox browser on Windows 7, there could be a few reasons why this is happening. Here are some steps you can take to troubleshoot and potentially resolve the problem: 1. Browser Compatibility: Ensure that you are using a compatible version of Firefox with Windows 7. Sometimes, using an outdated browser can cause compatibility issues. 2. Attachment Size Limit: Check the size of the pictures you are trying to insert. Some email clients have attachment size limits. If the picture size exceeds the limit, it may not attach properly. 3. Browser Extensions: Disable any browser extensions or add-ons that might be interfering with the email composition...