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!

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Zenworks does not allow client login with the error ‘Unable to log into the Zenworks realm because the system has disconnected from the network and the specified credentials did not match the credentials cached on the system’


Unable to log into the Zenworks realm because the system has disconnected from the network and the specified credentials did not match the credentials cached on the system.

I had this error on a client PC that wasn’t displaying the correct number of application icons in the Zenworks Application Window. Right clicking on the taskbar icon showed that the client wasn’t logged in – when an attempt to login was made the error message above was produced.

I followed advice on the Novell forums which amounted to:
– Clearing the cache by running this command rd C:Program FilesNovellzenworkscachezmd" /q /s
– Then running a refresh from the command prompt zac ref

After a restart this still didn’t allow the client to login so I could find no other way than removing and reinstalling the Zenworks application which then went on to work as normal.

How to change a linux account password


I don’t dabble in Linux very much but had an issue with an account on a CentOS server and I’d forgotten how to reset a password

You need to be logged in as superuser i.e. root so that you are then able to change the password for any account.

The command is passwd:

passwd joebloggs

You should then be prompted to enter a new password and asked to confirm

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"
http://answers.microsoft.com/en-us/ie/forum/ie9-windows_7/did-java-update-and-now-windows-states-application/29fdfc22-e594-413a-b1de-c6eb4954e4a4

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

Transaction log backups do not get deleted as per Database Maintenance Plan ‘remove files older than’ setting


Had this error on an old SQL 2000 instance where the server had disk capacity issues. The Database Maintenance Plan that was configured worked perfectly in every way except for the removal of transaction log backups that were older than a certain age.

I found this article which explained perfectly the symptoms that I was having http://support.microsoft.com/kb/303292

The Maintenance Plan did not meet best practice and there was just one plan that backed up the databases and transaction logs of all databases regardless of whether they were a system database (Master, Model, MSDB) or user databases in SIMPLE or FULL recovery mode.

A transaction log backup command against a database that is configured in SIMPLE recovery mode will cause an error message. There is a known bug within SQL 2000 that results in the Transaction Log backup continuing after this error to the next database but essentially it completes the process but without removing the expired TL backups.

For me this was a good opportunity to start again with the DB Maintenance Plans. I manually deleted the expired TL backups to reclaim hard disk capacity and then created 3 new DB Maintenance Plans. These were:

1. System DB Maintenance Plan – Includes optimisation, database backup
This is as per Microsoft guidance. Always backup system databases (Master, Model, MSDB) separately to user databases for resiliance
2. Full Recovery DB Maintenance Plan – Includes optimisation, database backup, transaction log backup
3. Simple Recovery DB Maintenance Plan – Includes optimisation, database backup

Microsoft also offer another alternative which is to change all your databases to FULL recovery but to me this is unneccessary when you have carried out risk analysis on your databases and have the correct maintenance plans in place.

HP Proliant DL380 G6 – 207 Memory Initialization Error


After a number of memory upgrades on our G6 servers I experienced an issue during the boot process whereby a number of DIMM slots were being reported as having 207 memory initialization errors.

I re-seated all the memory modules thinking that perhaps a module was not pushed in enough and after further research ensured that the BIOS was up to date.

Finally, I used different memory replacing the 3 new modules with a different set of 3 modules. This worked.

By process of elimination it turned out to be a faulty new module that was failing a bank of 3 modules. Even new HP memory can be faulty and is worth checking!

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 http://kbalertz.com/263317/Error-Message-Moving-Group-Another-Cluster.aspx 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.