Group Policy Preference Regional Options Not Working in Server 2008

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I am trying to convert users time format to HH:MM:SS (Military Time / 24 hour) through Group Policy. When I update the preference to HH:MM:SS and apply, Windows Server does not store the change. When I open up the Regional Option Preference again, it is switched back to h:mm:ss tt. I've tried to change the server time to the time I'm requesting in the policy, but that has failed. Any help on getting this policy to stick is appreciated.  (See attachments for screenshots)
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Top Expert 2005

Commented:
Where are you making this change?  To an existing policy or a new one?

Try using the dropdown and selecting:  HH:mm:ss



Author

Commented:
It is a new policy. I've tried saving both as HH:mm:ss and H:mm:ss, both fail. If you save it, it just reverts back.
Top Expert 2005

Commented:
Try changing it in the Default Domain Policy.  

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Author

Commented:
That does not work either.
Top Expert 2005

Commented:
Are you certain you have permissions to change this?  The fact it doesn't hold either means you don't or replication is broken so that another DC is replicating the original back over your last change.

Is there more than one DC? if so, what OSes are they all running?



Author

Commented:
Have you tried this for yourself on your own server? I've tried on multiple different machines and the result is always the same. The result is the same on networks with a single DC or multipe DCs w/replication. (All domains I've tested on have 2008 schema).
tigermattSite Reliability Engineer
Most Valuable Expert 2011

Commented:
If you're getting it on multiple networks then I'd put it down to some sort of bug in Windows Server 2008 which is causing it. Might be worth going over to the Microsoft Forums, posting a thread there and alerting them to this.

If I had access to a Server 2008 machine, I would try and replicate this - but at the moment, the network connection to a network running quite a few of these servers is down!

-tigermatt
Top Expert 2005

Commented:
Confirmed.

I am chasing this now.

The Editor doesn't appear to save a complete XML file.  It partly there, but not any further settings.

Top Expert 2005
Commented:
Ok, this isn't a bug.

When you select the Time tab and click in the field for Time Format - press F6 to turn that dotted red line into a solid green line to activate the setting.  Change it then apply it.

You won't see it apply on the DC until you log off then back on again.

The following are the controls for these preferences:

F5 - all settings activated (green)  (on the tab you have opened)
F6 - a single setting change from red to green (deactive/active)
F7 - a single setting change from green to red (active/deactive)
F8 - all settings dectivated (red dotted)

Let me know how you make out.

Author

Commented:
It worked! Thank you for the help.
Top Expert 2005

Commented:
Excellent!  Glad to help.

Commented:
That tip with the F5 and F6 keys was a big help to me, but when I change regional options, it doesn't seem to take effect on the PCs that I log into.  Can the user still override these with ease?
Dela-DWindows Systems Engineer

Commented:
Wow, can't believe I used the wrong search string in Google all the time trying to find a solution for this.

Finally solved now. This is perfect! Thanks Netman66.

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