If you got on Excel file this alert (that they are for security purpose)
You can simply click on --> Enable Editing or disable this excel file feature.
Here they are relative screenshots:

The Automatically diagnose and fix common problems with Windows Update troubleshooter may automatically fix the problem described in this article.
learn moreThis troubleshooter fixes many problems. | Run now |
| perating system | Update |
|---|---|
| All supported x86-based versions of Windows 8 (KB2937636) | Download the package now. |
| All supported x64-based versions of Windows 8 (KB2937636) | Download the package now. |
| All supported x64-based versions of Windows Server 2012 (KB2937636) | Download the package now. |
| Operating system | Update |
|---|---|
| All supported x86-based versions of Windows 7 SP1 | Download the package now. |
| All supported x64-based versions of Windows 7 SP1 | Download the package now. |
| All supported x86-based versions of Windows Server 2008 R2 SP1 | Download the package now. |
| All supported x64-based versions of Windows Server 2008 R2 SP1 | Download the package now. |
| All supported Itanium-based versions of Windows Server 2008 R2 SP1 | Download the package now. |
Download the WindowsUpdateAgent30-x86.exe package now.
Download the WindowsUpdateAgent30-x64.exe package now.
Download the WindowsUpdateAgent30-ia64.exe package now.