Got to look at exclusions too.  For example the workstations that need to 
access the security cameras.  We have a wall of displays in an office so 
someone can hunker down and feed info to the responders and anyone still on 
campus.

I get what they are asking for and why….every available media to announce an 
issue…but there are so many pitfalls on this one.

From: [email protected] [mailto:[email protected]] On 
Behalf Of Barbara Mockett
Sent: Tuesday, October 20, 2015 12:08 PM
To: [email protected]
Subject: RE: [NTSysADM] campus lockdown question

This seems like a case where you would want to be really careful about 
expectations.  Plan and announce tests.  You (and management) need to know how 
much time passes between when you hit “Send” and when the first, last and 
average PC/virtual machine/laptop, wired and wireless, receive the message.  
Management may be looking for something that’s not practical or possible to 
effectively deliver.

From: [email protected]<mailto:[email protected]> 
[mailto:[email protected]] On Behalf Of Kennedy, Jim
Sent: Tuesday, October 20, 2015 8:29 AM
To: [email protected]<mailto:[email protected]>
Subject: RE: [NTSysADM] campus lockdown question

Perhaps a Net Send to pop a message…then wait 5 seconds…and then lock it.  You 
could  copy a custom lock screen photo to the computers ahead of time and set 
it with regedit as part of your procedure. Then undo it after the emergency.  
But that is a lot of moving parts and relies on computers being on to undo..

From: [email protected]<mailto:[email protected]> 
[mailto:[email protected]] On Behalf Of roycroet
Sent: Tuesday, October 20, 2015 11:21 AM
To: [email protected]<mailto:[email protected]>
Subject: Re: [NTSysADM] campus lockdown question

Yes I can, is there any way to display a custom message in that lock screen?


Le mardi 20 octobre 2015 10h43, Erik Goldoff 
<[email protected]<mailto:[email protected]>> a écrit :

do you have the ability on all the windows systems to remotely execute 
something like :
%windir%\system32\rundll32.exe user32.dll,LockWorkStation

same as CTRL-ALT-DEL , Lock Workstation from the keyboard


On Tue, Oct 20, 2015 at 10:28 AM, roycroet 
<[email protected]<mailto:[email protected]>> wrote:
Good morning,

I've been asked by our school to lock and display a message on all computers in 
case of a campus lockdown.

SMS and alert on our website are not enough for upper management, they want to 
completely lock the systems.

Any idea would be greatly appreciated!



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