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showing posts tagged with 'computer'
by lunarg on October 13th 2014, at 12:46
Installing a firmware upgrade on your Dell Force10 MXL IOM works similar (but slightly differently) than the other Force10 series. There are two things to upgrade: the IOM firmware and IOM operating system. The first has to be upgraded through CMC (not documented here), the second through the switch itself.

To upgrade FTOS, you need console access (can be SSH/Telnet) to the switch and an SCP/FTP/TFTP server.

If you have none of these, you can download tftp32/64. This is a light-weight TFTP-server which does not need to be installed and can be run as an application on any networked computer. Place the downloaded firmware (the BIN-file) in the same location as the tftp32/64 executable and st  ...
by lunarg on September 9th 2014, at 12:04

Shutdown the VM.

Open .vmx file with Notepad or another plain text editor.
Add these lines:

hypervisor.cpuid.v0 = "FALSE" 
mce.enable = "TRUE"
vhv.enable = "TRUE"
vpmc.enable = "TRUE"

Save and start the VM. Now you can install the Hyper-V role.

by lunarg on September 4th 2014, at 11:52

To generate an SPF-record for your domain with the proper syntax, you can use the wizard at:

http://www.spfwizard.net/

To verify an SPF-record after it's in place:

http://mxtoolbox.com/spf.aspx

Read more on SPF: http://www.openspf.org/

by lunarg on September 3rd 2014, at 14:56

Wanted to install the latest BES Express (at the time of writing, this was 5.0.4) on a fresh Windows-server. Starting Setup.exe briefly shows the Blackberry splash-screen, then immediately crashes ("this program has stopped working...").

Apparently, RIM did some sloppy programming: changing the regional settings to English (US) or English (UK) resolves the issue.

by lunarg on August 28th 2014, at 15:05
You can install the Exchange 2013 management tools on a standard workstation or on another server to remotely administer your Exchange 2013 servers. This is particular useful if you need to run Exchange Management Shell often, and don't want to log on to the Exchange-server in order to do so.

You need this:

A supported operating system, such as Windows 7, Windows 8, 2008R2, 2012, or 2012R2

The target computer must be domain-joined.

The following Windows Features: IIS 6 Metabase Compatibility

IIS 6 Management Console

IIS Management Console



and obviously: the Exchange 2013 DVD or ISO

For Windows 7 and 2008R2, these are extra:

Microsoft .NET Framework 4.5 (Windo  ...
by lunarg on August 28th 2014, at 13:11
For migrations from other e-mail platforms to Exchange, you probably want to have full access enabled for a certain Exchange-account to facilitate the migration without having to set up complex access rights. Exchange has something called application impersonation, which allows a user to impersonate other users to access individual mailboxes, which comes in very handy during a migration.

In order to set up application impersonation, you need access to the Exchange Management Shell (EMS), with an account which has permissions to set up access rights.

Exchange 2007 does not support application impersonation as in Exchange 2010 and up. Impersonation does exist but has to be set on each indivi  ...
by lunarg on August 28th 2014, at 13:09

If for some reason you need to enable Basic Authentication, you can do so quickly through the Exchange Management Shell. This is sometimes needed if you're migrating to Exchange from another (third-party) e-mail provider.

If you do not know what Basic Authentication is, you do not need this!

Start up EMS as an account which has the required permissions to make changes to the virtual directories used by Exchange. Then, run this:

Set-WebServicesVirtualDirectory -Identity "EWS (Default Web Site)" -BasicAuthentication $true

Note that Office365 has Basic Authentication enabled by default.

by lunarg on August 27th 2014, at 11:00
When using Veeam to back up your VMs, and you get the following error on one or more VMs:

Error: VSSControl: -2147212529 Backup job failed.Discovery phase failed.Cannot add volumes to the snapshot set.Cannot add a volume to the snapshot set. Volume name: [\\?\Volume{6c169bc7-d7bf-11e0-b074-806e6f6e6963}\].Cannot add volume to the set of volumes that should be shadowed.VSS error: VSS_E_UNEXPECTED_PROVIDER_ERROR. Code:0x8004230f

According to KB1785, this is because of a third party VSS provider, present on the VM. If more than the default software provider is installed, another third party backup software suite may have enabled their provider on the VM, causing the initiation of a VSS backup  ...
by lunarg on August 26th 2014, at 12:48

Direct links to the proofing tools. Select a language and download its proofing tools for free:

by lunarg on August 26th 2014, at 12:13
If the Windows Internal Database, used by WSUS, and which is actually an embedded SQL Server, is eating all of your memory, you can limit its memory usage the same way you would with a real SQL Server.

Open an elevated command prompt and launch the SQL prompt:

For WSUS4 (on Server 2012):

osql -E -S \.pipeMicrosoft##WIDtsqlquery

For WSUS3 (on Server 2008, 2008R2 and SBS 2008/2011)

osql -E -S \.pipemssql$microsoft##sseesqlquery

This will log you in with the current credentials (which is why it has to be an elevated command prompt). The SQL prompt (1>) is shown.

Enter the following commands to initiate advanced configuration:

exec sp_configure 'show advanced option', '1';reconfigure;  ...
by lunarg on August 25th 2014, at 12:30
When running ADFS 3.0 On a Windows 2012 R2 domain controller, on a reboot, the Active Directory Federation Services service may not start up properly, and may not subsequently not service requests. The Services management snap-in shows the service with a status of Starting.

The reason for this is an error during the deployment of ADFS where a dependent service, the Microsoft Key Distribution Service, is not set to start automatically, causing ADFS not to start up properly until that particular service is also started.

The solution is quite simple: in the Services management snap-in, find the service called Microsoft Key Distribution Service, and set its startup type to Automatic.

After th  ...
by lunarg on August 22nd 2014, at 12:44
In case you need to manually truncate the database logs of your Exchange server, you can follow the steps below. You'll need sufficient permissions and access to the Exchange Management Shell.

Caution!
Be cautious when you perform this action, as making mistakes here could cause database corruption and loss of data. Don't do this during production hours because this will temporarily make some (or all) mailboxes unavailable! As always, it's a good idea to have a working backup before attempting this.

Open the Exchange Management Shell.

If you don't know the physical path of your database, locate it first:

Get-MailboxDatabase | Select Name,EdbFilePath,LogFolderPath

You'll notice the datab  ...
by lunarg on August 20th 2014, at 10:12

Exchange stores plenty of things in Active Directory, including mailbox information for each account. In case of a deinstallation of Exchange, this information usually remains behind, making it impossible to perform a new clean installation of Exchange and assigning a new mailbox to this user.

I found a solution here: http://www.telnetport25.com/2009/09/forcing-the-removal-of-exchange-attributes-on-a-directory-user-the-removeexchangeattributes-tool%E2%80%A6/

This command-line tool allows you to query and/or remove Exchange-attributes on AD objects (such as users and groups).

by lunarg on August 14th 2014, at 14:17
In certain cases when deploying machines from a template using deployment customization, parts of this process may fail. As a result, upon each reboot, the system may try to re-run the customization process, and the following message is displayed at each startup:

VMware Image Customization in progress

To remove any pending sysprep customization routine, you can manually remove the reference to it by editing the Windows Registry

Start regedit.exe.

Navigate to the key HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\.

Change the value of BootExecute. Remove the part that says sysprepDecryptor.exe. Leave the other parts of the value as they were (so only remove the one w  ...
by lunarg on August 13th 2014, at 09:16

A reminder to myself...

Set a bit:

Var |= Bit;

Clear a bit:

Var &= ~Bit;
by lunarg on July 4th 2014, at 13:59
Several Windows Phone devices, such as the Nokia Lumia series, may have trouble syncing with Zune. The device is correctly seen in Device Manager but Zune simply says it can't connect to the device, and that you need to turn it off and on again. Removing and reinstalling Zune does not help, nor does rebooting the phone.

Most of the time, the problem is caused by an invalid certificate. This usually occurs after updating Zune, or after installing other Windows Updates. You can recreate the certificate by stopping Zune, removing the certificate from the user's certificate store, then start Zune again.

To remove the certificate:

Completely stop Zune if it's running.

Open Certificate Manager  ...
by lunarg on June 25th 2014, at 14:10

A very interesting read about Wi-Fi implementations and its pitfalls in larger deployments, in particular about the usage of channels and the importance of channel plans.

http://blogs.aerohive.com/blog/the-wireless-lan-training-blog/wifi-back-to-basics-24-ghz-channel-planning

by lunarg on June 25th 2014, at 11:55
There are plenty of tools available, free and otherwise, to provide access to SFTP and SCP servers, with more or less features. Unfortunately, there aren't a whole lot of extensions out there that properly support SFTP/SCP through Windows Explorer itself, providing a somewhat seamless integration in Windows itself. Although there is the win-sshfs project, but this requires installation of several additional prerequisited software components, making this a less attractive solution. Luckily, there's also Swish.

Swish provides SFTP access from inside Windows Explorer. As it installs as an extension, it has no additional requirements, nor does it need to install some driver or library to work.   ...
by lunarg on June 18th 2014, at 13:50
Configuring NTP for time synchronization on Dell PowerConnect switches is similar to that of Cisco iOS, but with the syntax being a little different.

You need privileged console/SSH/telnet access for this to work.

SW#configureSW(config)#sntp unicast client enableSW(config)#sntp server ip-addressSW(config)#no sntp authenticateSW(config)#end

This will set the NTP server's address to whatever you specify (replace ip-address). To verify, you can run these:

show sntp configuration

This will show you the current NTP settings and status:

SW# show sntp configuration

Time zone configuration was missing for a long time, and was only introduced in more recent firmwares. Check on the Dell website  ...
showing posts tagged with 'computer'
 
 
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