This policy setting allows you to manage whether a check for new virus and spyware definitions will occur before running a scan.
This setting applies to scheduled scans as well as the command line "mpcmdrun -SigUpdate", but it has no effect on scans initiated manually from the user interface.
If you enable this setting, a check for new definitions will occur before running a scan.
If you disable this setting or do not configure this setting, the scan will start using the existing definitions.
Registry Hive | HKEY_LOCAL_MACHINE |
Registry Path | Software\Policies\Microsoft\Windows Defender\Scan |
Value Name | CheckForSignaturesBeforeRunningScan |
Value Type | REG_DWORD |
Enabled Value | 1 |
Disabled Value | 0 |