Trong support của Micrsoft nè bạn:
In Office 2003, when you click a hyperlink or an object that links to an executable file, you may receive the following error message:
Opening path/filename.
Hyperlinks can be harmful to your computer and data. To protect your computer, click only those hyperlinks from trusted sources. Do you want to continue?
Note This behavior occurs regardless of your security level settings. To locate your security level settings, on the Tools menu, point to Macro, and then click Security. To disable the hyperlink warnings in Office 2003 when an HTTP:// or an FTP:// address is used, you must create a new registry subkey. To do this, follow these steps.
Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
322756 How to back up and restore the registry in Windows1. Click Start, and then click Run.
2. In the Open dialog box, type regedit, and then click OK.
3. In Registry Editor, locate and then click one of the following registry subkeys:
HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\Common
HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\11.0\Common
Notes• You only have to modify one of these registry subkeys, not both of them.
• If the HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\11.0\Common registry subkey does not exist, you may have to manually create it.
4. After you click the registry subkey, point to New on the Edit menu, and then click Key.
5. Type Security, and then press ENTER to name the key.
6. On the Edit menu, point to New, and then click DWORD Value.
7. Type DisableHyperlinkWarning, and then press ENTER to name the entry.
8. In the right pane, right-click DisableHyperlinkWarning, and then click Modify.
9. In the Edit DWORD Value dialog box, click Decimal, and then type 1 under Value data.
Note A value of 0 enables the hyperlink warning message, and a value of 1 disables the warning message.
10. Click OK.
11. Quit Registry Editor.
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