Outlook 2016 sometimes blocks unsafe attachments for security reasons, like WZCLINE.CHM file. It can be frustrating, especially when you need those files. Here’s how to handle it:
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Solution 1: Change Security Settings
- Open Outlook.
- Go to File > Options > Trust Center > Trust Center Settings.
- Click on Attachment Handling.
- Uncheck “Do not allow attachments to be saved or opened that could potentially be a virus“.
Solution 2: Use a Registry Hack (if you’re comfortable)
- Press Windows Key + R, type regedit, and hit Enter.
- Navigate to: HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\Security
- If the Security key doesn’t exist, create it.
- Create a new String Value named Level1Remove.
- Double-click it and add the file extension .CHM to the value data.
- Close the Registry Editor and restart Outlook.
Solution 3: Ask the Sender to Compress the File
Request the sender to zip the file using a different format. Files like .zip or .rar are less likely to be blocked.
Solution 4: Accessing Attachments from Webmail
Sometimes, accessing your email through your webmail (e.g., Outlook Web App) can allow you to download the attachment directly.
Solution 5: Third-party Tools
Use tools like WinRAR to extract the contents if the file is archived.
Don’t let Outlook’s security blocks slow you down. Use these steps to access your important attachments.