Why Outlook Not Opening Attachments When Double-click?

[allen]

Sometimes Outlook not opening attachments when double-click them, the issue could be caused by several factors such as file type restrictions, corrupted Outlook temporary files, or blocked attachments for security reasons. Sometimes, outdated Outlook versions or missing application associations (like Word, Excel, or Adobe Reader) also prevent attachments from opening. In other cases, security software or group policies in a work environment may block certain file types. To fix this, you can try clearing Outlook’s temporary files, checking file associations, disabling unnecessary add-ins, or updating Outlook to the latest version. If the problem persists, adjusting Outlook’s security settings or contacting your IT admin may be required.