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Group Policy refresh behavior

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D.P. Roberts

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Feb 16, 2005, 10:53:04 AM2/16/05
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The default time interval for group policy background refreshing is 90
minutes. But I'm curious: is it a fixed 90 minute schedule for all machines
in the domain, or is it variable depending on when a particular machine last
received the update? In other words, what is the outcome of this scenario:

A background GP refresh occurs on my machine at 9:00. I reboot and login at
9:30, which triggers another GP refresh. When will the next background GP
refresh (ignoring randomization) occur?

A. 10:30 (90 minutes after the original 9:00 refresh)
B. 11:00 (90 minutes after the user-triggered 9:30 refresh)


If A is correct, it would mean all machines in your domain are always on the
same refresh schedule.
If B is correct, it would mean domain machines are on different refresh
schedules.

Anyone know?


Glenn L

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Feb 16, 2005, 8:25:02 PM2/16/05
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B is correct.
GPO refresh happens at reboot, login, and in the background every 90 minutes
(clock starts at boot for computer side background refresh. clock starts at
login for user side background refresh)

GPOs will only truly be reapplied when there are changes. (this is
controllable through CSE registry settings on the workstation)

Just to clarify,
A GPO refresh is when the client goes out, detects what GPOs should be
applied, compares the list to what was last applied, and compares the
version of the GPO to the version of the GPO last applied. If there are any
new GPOs to apply, or if one of the GPOs (Site, Domain, or OU based) have a
higher version number, then the GPO will be applied to the workstation or
user.

The security CSE will reapply the GPO security settings every 16 hours even
if there are no changes (same version number)


--
Glenn L
CCNA, MCSE 2000/2003 + Security

"D.P. Roberts" <dpro...@pbride.com> wrote in message
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