Microsoft forefront endpoint protection not updating
By default, this is set to 4,320 minutes, or 72 hours.
If none of the sources have definitions available, the SCEP client will return an error.
Selecting this option sets a registry value called Au Grace Period in HKLM\Software\Policies\Microsoft\Microsoft Antimalware\Signature Updates .
When the SCEP client definitions become too far out of date, or if the end user clicks Update in the UI, the SCEP client looks for a Fall Back Order registry key in HKLM\Software\Policies\Microsoft\Microsoft Antimalware\Signature Updates .
The SCEP client will check each update source in order until it locates a source that has available definitions.
A low or medium alert message may indicate any of the following: Alerts are displayed in the FEP window.