Archive for the ‘Windows’ Category

Why is my Windows server communicating with hosts 94.245.121.253 or 157.56.144.215?

On modern servers, for example Windows Server 2012 R2 you might see “suspicious” traffic to IP addresses 94.245.121.253 or 157.56.144.215 on port 3544. This traffic is coming from the Microsoft Teredo implementation. These IP addresses actually resolve to terodo.ipv6.microsoft.com What is teredo? Teredo is a protocol that allows computers behind a NAT firewall (most home computers […]

Setting the Windows Server 2012 R2 sxs (alternate sources) path locally

When you try to install any Windows Server 2012 R2 role or feature, Windows requires the original setup files. You can use the CD and specify the path, or you can use the steps written below to set the path to for example a network location. 1.Start the Local Group Policy Editor or Group Policy […]

FSRM: Failed to send the test e-mail due to the following error: Cannot send the email due to an error.

I was working on FSRM (File Server Resource Manager) today and I was trying to get e-mail notifications working. Using the test button, the following error appeared: Further investigation in the Windows (application)eventlog showed me the following information: A File Server Resource Manager Service email action could not be run. Error-specific details: Error: IFsrmEmailExternal::SendMail, 0x8004531c, […]

Disable hibernation on multiple Windows 2008 servers using Windows Powershell

By default hibernation is disabled on Windows 2008 server machines. However, a file called “hiberfil.sys” (equally sized to the amount of memory in the machine) is created in the root of the system volume. On a machine with 2GB of memory, this is not a big issue. However I discovered this on a VM with […]

The case of the black Windows startup screen

Today I had a nice issue. One of the servers at work suddenly had a “black” Windows startup screen. It looked like this:

Extending Windows 2003 os disk using diskpart and VMware

I use this trick quite often for Windows 2003 machines (this is not needed on Windows 2008 machines, you can use diskpart directly here!) After time the OS disk grows out it’s free space, usually this happens due to Windows updates or logfiles. So, here’s how to extend an OS disk of a Windows 2003 […]