O escritório da Microsoft identificou uma possível preocupação de segurança
hyperlinks can be harmful to your computer and data. To protect your computer, click only those hyperlinks from trusted sources.
É um "Alerta de segurança", não um erro. Você pode desativar esses alertas de segurança.
Nota:
- A Microsoft não recomenda isso .
This article describes the risks involved when a document that you are working in contains a link to a suspicious website or when you try to open a file from a suspicious website. Microsoft Office helps protect you from these risks with settings in the Trust Center.
Enable or disable security alerts about links to suspicious websites
In Office, detection of suspicious links to websites is turned on by default. You can turn detection off so that you don't get security alerts. But we do not recommend this.
In an Office program, click the "File" tab.
Office 2007 doesn't have a "File" tab. Instead, click the "Office" button.
Click "Options".
Click "Trust Center", and then click "Trust Center Settings".
Click "Privacy Options".
Under "Privacy Options", select or clear the "Microsoft Office documents that are from or link to suspicious Web sites" check box.
Click "OK".
The following image is an example of the "Privacy Options" area of the "Trust Center".
Fonte Ativar ou desativar alertas de segurança sobre links e arquivos de sites suspeitos