How to make WSUS rescan for PCs

[Clayton Sutton]

Hey everyone,

I am running WSUS 3.0 and I deleted a computer group with all the PCs in it.
Can someone tell me how to make WSUS rescan for all computers on the
network?

Thanks,

Clayton

[Lawrence Garvin (MVP)]

Post by Clayton Sutton
Hey everyone,
I am running WSUS 3.0 and I deleted a computer group with all the PCs in
it. Can someone tell me how to make WSUS rescan for all computers on the
network?

[1] Wait. All computers will check back in and repopulate the computer group
within 22 hours (or the configured detection interval if not the default
value). This presumes, however, that you have recreated the accidentally
deleted computer group.

=or=

[2] Temporarily reconfigure your policy to have a one hour detection.
Combined with the delay to refresh group policy, this will reduce the time
to repopulate the group to about two hours. (The detection will occur
immediately upon the policy refresh.) Remember to set the detection interval
back to the original value after four hours.

=or=

[3] Walk around to each computer (or use remote access), and run the command
'wuauclt /detectnow'.

[Clayton Sutton]

Thank you very much Lawrence!

If I wanted to change the detection interval where would I do that, I've
been looking for it?


Clayton

Post by Lawrence Garvin (MVP)

Post by Clayton Sutton
Hey everyone,
I am running WSUS 3.0 and I deleted a computer group with all the PCs in
it. Can someone tell me how to make WSUS rescan for all computers on the
network?

[1] Wait. All computers will check back in and repopulate the computer
group within 22 hours (or the configured detection interval if not the
default value). This presumes, however, that you have recreated the
accidentally deleted computer group.
=or=
[2] Temporarily reconfigure your policy to have a one hour detection.
Combined with the delay to refresh group policy, this will reduce the time
to repopulate the group to about two hours. (The detection will occur
immediately upon the policy refresh.) Remember to set the detection
interval back to the original value after four hours.
=or=
[3] Walk around to each computer (or use remote access), and run the
command 'wuauclt /detectnow'.
--
Lawrence Garvin, M.S., MCITP(x2), MCTS(x5), MCP(x7), MCBMSP
Principal/CTO, Onsite Technology Solutions, Houston, Texas
Microsoft MVP - Software Distribution (2005-2009)
MS WSUS Website: http://www.microsoft.com/wsus
My Websites: http://www.onsitechsolutions.com;
http://wsusinfo.onsitechsolutions.com
My MVP Profile: http://mvp.support.microsoft.com/profile/Lawrence.Garvin

[Lawrence Garvin (MVP)]

Post by Clayton Sutton
Thank you very much Lawrence!
If I wanted to change the detection interval where would I do that, I've
been looking for it?

It's configured in the GPO you set up; or use Local Policy.

Alternatively, although not recommended, you can edit the registry directly.

The wherefores and howtos of the policy and/or registry settings are
documented in the WSUS Operations Guide.

For policy, enable the policy "Automatic updates detection frequency", and
set the time to the desired interval. (One hour in the specific scenario
being discussed here.)

Or, in the registry, in the subkey
HKLM\Software\Policies\Microsoft\Windows\WindowsUpdate\AU

Create or edit the value "DetectionFrequencyEnabled" and set it to dword:0x1
(enabled).
Create or edit the value "DetectionFrequency" and set it to dword:0x1 (1
hour).

[Clayton Sutton]

Again, thank you Lawrence,

I found it in the GPO!


Calyton

Post by Lawrence Garvin (MVP)

Post by Clayton Sutton
Thank you very much Lawrence!
If I wanted to change the detection interval where would I do that, I've
been looking for it?

It's configured in the GPO you set up; or use Local Policy.
Alternatively, although not recommended, you can edit the registry directly.
The wherefores and howtos of the policy and/or registry settings are
documented in the WSUS Operations Guide.
For policy, enable the policy "Automatic updates detection frequency", and
set the time to the desired interval. (One hour in the specific scenario
being discussed here.)
Or, in the registry, in the subkey
HKLM\Software\Policies\Microsoft\Windows\WindowsUpdate\AU
Create or edit the value "DetectionFrequencyEnabled" and set it to
dword:0x1 (enabled).
Create or edit the value "DetectionFrequency" and set it to dword:0x1 (1
hour).
--
Lawrence Garvin, M.S., MCITP(x2), MCTS(x5), MCP(x7), MCBMSP
Principal/CTO, Onsite Technology Solutions, Houston, Texas
Microsoft MVP - Software Distribution (2005-2009)
MS WSUS Website: http://www.microsoft.com/wsus
My Websites: http://www.onsitechsolutions.com;
http://wsusinfo.onsitechsolutions.com
My MVP Profile: http://mvp.support.microsoft.com/profile/Lawrence.Garvin

[PA Bear [MS MVP]]

[[ Close, but no soup for you! Forwarded to WSUS newsgroup
(microsoft.public.windows.server.update_services) via crosspost as a
convenience to OP.

On the web:
http://www.microsoft.com/communities/newsgroups/list/en-us/default.aspx?dg=microsoft.public.windows.server.update_services

In your newsreader:
news://msnews.microsoft.com/microsoft.public.windows.server.update_services
]]

Post by Clayton Sutton
Hey everyone,
I am running WSUS 3.0 and I deleted a computer group with all the PCs in
it.
Can someone tell me how to make WSUS rescan for all computers on the
network?
Thanks,
Clayton

[Tim Henley]

Hi

I had a simlar issue...and can't use any of the client fixes offered here.

Running SBS2008 and WSUS 3.0

I accidentlly deleted the host server from the WSUS 'servers' group whilst I was deleting a couple of old redundant servers to remove them from the reports....dammit !

How d I re-add the server?

Thanks

Head in hands !

Post by Clayton Sutton
Hey everyone,
I am running WSUS 3.0 and I deleted a computer group with all the PCs in it.
Can someone tell me how to make WSUS rescan for all computers on the
network?
Thanks,
Clayton

Post by Lawrence Garvin (MVP)
[1] Wait. All computers will check back in and repopulate the computer group
within 22 hours (or the configured detection interval if not the default
value). This presumes, however, that you have recreated the accidentally
deleted computer group.
=or=
[2] Temporarily reconfigure your policy to have a one hour detection.
Combined with the delay to refresh group policy, this will reduce the time
to repopulate the group to about two hours. (The detection will occur
immediately upon the policy refresh.) Remember to set the detection interval
back to the original value after four hours.
=or=
[3] Walk around to each computer (or use remote access), and run the command
'wuauclt /detectnow'.
--
Lawrence Garvin, M.S., MCITP(x2), MCTS(x5), MCP(x7), MCBMSP
Principal/CTO, Onsite Technology Solutions, Houston, Texas
Microsoft MVP - Software Distribution (2005-2009)
MS WSUS Website: http://www.microsoft.com/wsus
My Websites: http://www.onsitechsolutions.com;
http://wsusinfo.onsitechsolutions.com
My MVP Profile: http://mvp.support.microsoft.com/profile/Lawrence.Garvin

Post by Clayton Sutton
Thank you very much Lawrence!
If I wanted to change the detection interval where would I do that, I have
been looking for it?
Clayton

Post by Lawrence Garvin (MVP)
It's configured in the GPO you set up; or use Local Policy.
Alternatively, although not recommended, you can edit the registry directly.
The wherefores and howtos of the policy and/or registry settings are
documented in the WSUS Operations Guide.
For policy, enable the policy "Automatic updates detection frequency", and
set the time to the desired interval. (One hour in the specific scenario
being discussed here.)
Or, in the registry, in the subkey
HKLM\Software\Policies\Microsoft\Windows\WindowsUpdate\AU
Create or edit the value "DetectionFrequencyEnabled" and set it to dword:0x1
(enabled).
Create or edit the value "DetectionFrequency" and set it to dword:0x1 (1
hour).
--
Lawrence Garvin, M.S., MCITP(x2), MCTS(x5), MCP(x7), MCBMSP
Principal/CTO, Onsite Technology Solutions, Houston, Texas
Microsoft MVP - Software Distribution (2005-2009)
MS WSUS Website: http://www.microsoft.com/wsus
My Websites: http://www.onsitechsolutions.com;
http://wsusinfo.onsitechsolutions.com
My MVP Profile: http://mvp.support.microsoft.com/profile/Lawrence.Garvin

Post by Clayton Sutton
Again, thank you Lawrence,
I found it in the GPO!
Calyton
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