If you encounter the problem of being unable to forward WeChat files to Outlook using data traffic, there may be several reasons:

1. Network connection problem: First, please ensure that your The phone or device is connected to an available data network. If the network connection is not working properly, files may not be transferred properly. You can try switching to a different network or restarting your device to resolve network issues.

2. WeChat version issue: Make sure you are using the latest version of the WeChat application. Older versions may cause some features to not work properly. You can try updating the WeChat app and try forwarding the file again.

3. File size limit: WeChat and Outlook both have file size limits. WeChat's file size limit is typically 100MB, while Outlook's limit may vary depending on configuration. If the file to be forwarded exceeds the limit, it cannot be forwarded directly through WeChat. You can try compressing the file or using another method to transfer it, such as sending it via email.

If the above methods still cannot solve the problem, you may need to further check the device settings, software configuration, or contact relevant technical support personnel for more accurate help.