Link to home
Start Free TrialLog in
Avatar of Insideview
InsideviewFlag for United Kingdom of Great Britain and Northern Ireland

asked on

help! cant access sbs2011 ipv6 removed

I have an SBS 2011 server, in trying to solve a different problem I found articles saying disable ipv6, on rebooting the server just hangs on "applying settings" this was for over an hour until I switched the server off.

On further searching I now know that switching off ipv6 was crazy.

If I try to start the sever in safe mode or SM with networking I get to the logon screen enter the details and I get "there are currently no logon servers available to service the logon request"

Where do I go from here please!!
Avatar of Chris Millard
Chris Millard
Flag of United Kingdom of Great Britain and Northern Ireland image

You should be able to boot into Safe Mode to re-enable IPv6. I've been caught out with this before!
Avatar of Insideview

ASKER

Hi Chris, I read that elsewhere too but when I try to login it just says "there are currently no logon servers available to service the logon request"
When you boot into safe mode, what option are you selecting? I can't remember whether you need Safe Mode or Safe Mode with Networking.
I have tried all three, safe mode, SM WITH networking and Safe mode command prompt, same issue with all three
Have you tried directory services restore mode?

Sounds like because IPv6 has been disabled the server can't see it's own active directory to log you on.
Andy, no, I have not used it before, do you have instructions?
You get into Directory Services Restore mode the same way as you do with Safe Mode - F8 at bootup.

You'll need the directory services restore mode password that should have been set when the server was initially set up.
Directory Services Restore mode is a good idea.

Have you tried powering the server on without it being plugged into the network?  Some services will fail to start but it may get by the 'Apply Settings' screen and allow you to login so that you can re-enable IPv6.  When logging in you may find that explorer won't open but you should be able to Ctrl+Alt+Del, open task manager and run cmd. Not guaranteed to work but its worth a shot.

Booting to last Known Good Configuration may also resolve the problem.
Chris, going to Directory Services Restore mode just took me to a black screen, as if the monitor was not receiving a signal or the graphics driver had not loaded.
David, yes tried last known good, also tried starting without a network cable, lots of HDD activity, how many hours do people think I should leave it in case its trying to self repair? Overnight?
What method did you use to disable IPv6?  Was it on the OS or the network card?

Any other updates installed that could have caused the issue?  Also, what was the original problem?
Original problem was that the customer was intermittently get notification from his customers that some emails he was sending were getting delivered 3 or 4 times, I suspected temp loss of connection causing the emails to be resent so I was looking for possible problems with the network card hence turning off IPv6.

I disabled it in the OS by unticking it in the network card properties. On rebooting this morning there were a couple of small updates but I dont know what they were.

Earlier today the server was just sitting showing "applying settings" but now I just have a black screen as though the signal is lost or out of range. (I have tried three monitors) the only way I can see whats going on is to select one of the Safe mode options at start up and then I am stopped from logging in by the message "there are currently no logon servers available to service the logon request"

Strangely there is an option to start the server in vga 640x480 but even that goes to a black screen when trying to get to the logon screen.

Even with no network cable plugged in there is a lot of HDD activity
ASKER CERTIFIED SOLUTION
Avatar of David Atkin
David Atkin
Flag of United Kingdom of Great Britain and Northern Ireland image

Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
David,
well done,
'm in safe mode! should it just be a case of re enabling ipv6?
David, in safe mode the ipv6 box IS already ticked!
Ok, the event logs is your first point of call. Check the recently installed updates as well.
David, there were 5 windows security updates installed this morning, mainly patches to shop hacker getting an "elevated position" All 5 have been uninstalled for now.

As the ipv6 boxes were already ticked when going in safe mode maybe my initial thoughts were incorrect that I had disabled them?

With regard to the event viewer after a day of crashing out and restarting and now being in safe mode the events log is littered with errors and warnings, where would YOU start looking
SOLUTION
Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
from 5:20am today to about 11am the application logs are littered with tons of "windows cannot log you on because your profile cannot be loaded, check you are connected to the network and your network is functioning correctly.

Have checked the profile list in regedit. picture attached
User generated image
Hmm could be a corrupt profile.

To be claw when it said applying setting was it after you had logged in or before?
before,

now having rebooted I just have a black screen again, this is before the logon screen has come up.

I can ping the server address but cannot RDP, faced with crashing out again
Still getting the black screen?

If so boot back to Safe Mode with Networking. Recheck logs.

Any driver updates done recently?
stopping for tonight, thanks for all the help so far
I would delete those .bak entries from the profile list. They will be temporary profiles for user accounts.
Hi Chris, I would tend to agree with you but at the moment the machine is giving me a black screen BEFORE I get to the logon screen in anything other than safe mode options, my only option then is to crash out and go into safe mode again
After going back into safe mode I have rolled back to original Graphics driver (ES1000) to standard VGA, rebooted normally, logged in and its trying to prepare desktop
Had it done a Graphics driver update then?

Are your backups working ok?
David, no it still had the 2009 original driver from the install disk.

Very concerned about the backup, it was checked on in the SBS consol a few days ago and it had backup and showed green. After about two hours yesterday I though, no problem I will use the backup to restore. On trying to restore the image I just get a generic error message, it doesn't even go to look for the image on the usb drive.
After a very long wait I have logged in normally and the SBS 2011 Console has come up plus the desktop icons. most of the services have started but when I click on users and groups it says they do not exist.
Tried to go to AD users and computers and it says that the "naming information cannot be located because: the interface is unknown."
SOLUTION
Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
Check your services. What automatic services arent started? AD services started?

With regards to the DNS. Are there any errors in the DNS event logs?

When you expand the DNS do you see IPv4 and IPv6 with the green tick?
Since my last post I backed up the registry and changed the computer name in the control sets to the correct name and rebooted. The DNS Manager now shows the correct server name.

Automatic Service that did NOT start are

Microsoft Exchange Transport (But it did start when I started it manually)
POP 3 Connector
Microsoft .NET Framework NGEN v4.0.30319_x64
Microsoft .NET Framework NGEN v4.0.30319_x86
Windefend (description says Failed to read description error code 2)
wscsvc (description says Failed to read description error code 2)

DNS Errors, only one warning, it says
The DNS server is waiting for Active Directory Domain Services (AD DS) to signal that the initial synchronization of the directory has been completed. The DNS server service cannot start until the initial synchronization is complete because critical DNS data might not yet be replicated onto this domain controller. If events in the AD DS event log indicate that there is a problem with DNS name resolution, consider adding the IP address of another DNS server for this domain to the DNS server list in the Internet Protocol properties of this computer. This event will be logged every two minutes until AD DS has signalled that the initial synchronization has successfully completed.

expanded dns picture below, no IPv 4 or 6
User generated image
SOLUTION
Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
The Microsoft exchange transport that I started manually earlier has stopped again,
just restarted Active Directory Domain services
Active Directory and SBS console now showing all users

just running fix my network
David / Chris many thanks almost back to normal, emails in and out, users logging on OK

BUT still have a couple of automatic services not starting

wscsvc failed to read description error code 2 - system could not find the file specified
windefend failed to read description error code 2 - system could not find the file specified
software protection (but does start manually
Microsoft .NET NGEN x64 & x86

the first three are all to protect against malware etc (am I correct?)
can the missing files be reinstalled somehow?

been looking for answers, any idea guys?
Hey,

Check your OWA is working. If it is, ignore the .NET services, it maybe older versions 2/3 that aren't in use.

Do you have an anti virus on the server? I didn't think that the windows defender was included by default. Did you install that?

Is the wscsvc for windows security centre? If so that shouldn't be showing either.

Did you restore any parts of the registry from a reg backup from client computer or anything?
Hi David, that's interesting, there are intermittent issues with remote.xxxx.co.uk/OWA, sometimes you can get in and other times you get an error page, once I left the error page open whilst I went to another tab in ie and when I came back to it it had righted itself and the owa logon page was up. (This morning its working OK so far)

Windows defender, no I didn't install it, we have always used AVG internet security right from the start (2 years)

Registry, No, nothing imported, only exported sections before making changes
Thank you for sticking with it, a combination of problems encountered, System now running fine on Standard VGA driver, original drive goes to black screen only. Trying to restart with "last known good" encountered the bug where the machine name was changed in DNS, once this was changed back in the control set everything gelled together again. Had to run fix my network to finish. Still don't know how wscsvc and windefend were invoked in services
No problem.  I'm glad that your issue got resolved.