Hi @万帅 ,
Currently in Microsoft Q&A we only support English, could you please use English in the following description? Then we can help to solve your issues.
According to my research, Outlook gives that warning message when an add-in or application wants to send an email or access Outlook data in an unexpected or insecure way.
To prevent this security warning from appearing again, you can try the following methods:
- Check for updates of the add-in or application.
- Check for updates of your antivirus software, if your antivirus software subscription expires or is inactive, you might get the security warning again when a program tries to access Outlook.
- Security prompts will not be shown when you have a virus scanner installed which reports its status to Windows and reports its status as “Valid”. You can verify this in the following location: File > Options > Trust Center > Trust Center Settings > Programmatic Access
More information, see: I get warnings about a program accessing email address information or sending email on my behalf
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