Error message “Someone is currently logged into the APC Management Web Server. Please try again later”

When you attempt to access your APC Environmental Monitoring Appliance via a web interface you receive the error "Someone is currently logged into the APC Management Web Server. Please try again later"

After confirming that no one is actually logged in it looks as though the web interface has got stuck. If near you could physically power cycle the unit to refresh the web interface. If the appliance is located some distance away the workaround is to telnet to it and then log off by selecting option 4 in the Control Console

Try accessing the web interface now and you should be able to log in as normal.

‘The volume you have selected may not be extended’ error when attempting a volume extension using Diskpart

I encountered this problem trying to resize the system drive of a virtual machine. Normally I add the extra space using the vSphere client then power down the VM before adding the virtual disk as a secondary disk on another Windows 2003 VM. There I can usually run Diskpart and safely extend it, detach as a secondary drive and power up the original VM with it’s now extended system drive.

In this instance I received the error:
The volume you have selected may not be extended.
Please select another volume and try again.

After a liitle research and reading I found this which pointed me in the right direction:

I downloaded fsextend and saved into C:WindowsSystem32 and then whilst still using the Diskpart utility, ran the command:
extend filesystem

But I still received the error. I was about to run the fsextend utility directly as the only syntax it requires is fsextend (drive letter) when I realised that I would need a drive letter for the volume I was attempting to extend (I don’t normally assign a letter – the volume usually extends without)

I assigned a drive letter and whilst still in the same session of Diskpart ran extend filesystem again but this time it was successful..

I’m not sure whether simply assigning a drive letter resolved the issue or whether fsextend helped in some way.

I later found out that from Windows 2003 SP2 the Diskpart utility has the extra and originally undocumented filesystem command included natively within the utility. In theory you should not need the fsextend utility above if running the latest Windows 2003 SP2 and it may be worth assigning a drive letter temporarily to see if this resolves the extending issue in the first instance.

How to set the Access 2003 Security Level to Low for all user profiles

By default the Security Level in Access 2003 is set to Medium (Tools > Macro > Security). If a database has macros built in then you will be prompted with a couple of messages regarding ‘blocking unsafe exceptions’ and ‘do you want to continue to open.’

My particular issue was with an Access 2003 database that was to be accessed by a large number of users via a Terminal Server.

To suppress these messages you need to set the security level to ‘low’. Although you can do this in Access itself, this only applies to that user profile.

To set across all user profiles you need to add the following registry key (obviously take a backup of the registry before making any changes)

I had to create the Security key as it didn’t already exist.


Error ‘The Logon User Interface DLL NWGINA.DLL failed to load’ instead of a login prompt

I had removed the Novell Netware client from an XP workstation and received this error message after a reboot. It’s simply a registry key that hasn’t been deleted during the Novell client uninstall process.

Restart the PC in Safe Boot mode. Open the registry and locate the following key:
HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionWinlogonGinaDLL

The value is set to NWGINA.DLL

Double click the GinaDLL key and change the value to MSGINA.DLL

Restart the PC and you should now have a Windows login prompt.

Error “Windows cannot install required files. The file may be corrupt or missing. Make sure all files required for installation are available, and restart the installation. Error code: 0x80070570” when installing Windows 7

I have had this frustrating problem whenever I try to deploy via MDT or directly via DVD. The installation copies the Windows files but fails at xx% during the expanding Windows files process.
I first assumed that it was a faulty hard drive but diagnostics stated that it was fine. I reset the BIOS to use the defaults and reset the CMOS battery but to no avail. Finally I looked at the memory which was 2 x 2GB modules. I removed 1 module and restarted the Win 7 installation and hey presto the installation then was fine!

Java error ‘Application Blocked by Security Settings’

Received this error earlier when accessing a section of an application that required Java to run. ‘Application Blocked by Security Settings – Your security settings have blocked an application from running with an insecure or expired jre’

You may also receive a second error this time a ‘Security Exception’

I think the cause of the problem is profile based. A different Windows profile works fine so it’s a local issue caused probably by accidentally selecting ‘No’ if ever prompted to run the application – probably the first time after a Java update.

This page mentions accessing the Java applet in Control Panel then selecting Tools>Internet Options>Security tab, click "Reset all zones to default"

Unfortunately the Java applet seems different for each version of Java and I couldn’t find the "Reset all zones to default" option

I updated Java to the latest version which then prompted again the first time I opened my application through a web page and I was then able to access the content without any errors.

Desktop shortcuts disappear in Windows 7

On a couple of occasions I have lost a number of my Excel and Word shortcuts from my Windows 7 desktop inexplicably.

This is apparently normal behavior as Windows 7 cleans up what it believes to be broken or unused links. However this is infuriating as I regularly use the links hence their existence on the desktop in the first place!

To stop this from automatically occurring:

– Open up Task Scheduler (Start > All Programs > Accessories > System Tools)
– In the left hand pane expand the Task Scheduler Library
Select Microsoft > Windows > Diagnosis
– In the middle pane a task should be displayed as Scheduled. Right click this and select Disable
– Exit the Task Scheduler

Microsoft Server Cluster Service – An error occurred attempting to move the group. The cluster node was not found. Error ID 5042

Since restarting all the server nodes in a MSCS cluster I had an issue with a couple of the server nodes reporting delayed write errors to a drive that should have only been visible to one of the nodes.

I tried to move the cluster group to the server node that should not have access so that I could then move it back to the correct node thinking that it would potentially cleanly remove the access to the drive resource. When I tried to move it I got the error:

An error occurred attempting to move the group. The cluster node was not found. Error ID 5042

After a bit of a search found this which helped.

I checked that the resource group was configured to move to the node which it was but the individual resource elements in the group where not! Adding the server node as a destination for each of the resources allowed me to then move the group to and from the offending server node and stopped the write delay errors.

Windows Update fails with error 0x80072EE2

Had a problem with a Windows 2003 Server that would not update automatically or if I tried manually. Found the solution from the web site below which was to switch the Windows Firewall on and then back off or vice versa. Bizarrely this fixed the error and Windows was able to update.