OpenVPN client on Windows with default settings only supports one active VPN connection. When installing OpenVPN on Windows, only one virtual adapter of the TAP or Wintun type is created. If you want to connect to multiple OpenVPN servers at the same time, you need to create an additional WinTAP or Wintun network adapter.
If you try to start another VPN connection, an error will appear:
Continue reading “OpenVPN: How to Connect Multiple VPNs at the Same Time on Windows”
Several times I came across a situation where one of the users on a Windows Server host with an RDS (Remote Desktop Services) role ran an application that leaked and occupied all available RAM. It was impossible to connect to such a host via RDP remotely. To kill the leaked process, you need to remotely logoff this user.
I ran into a strange issue while establishing an RDP connection to a Windows Server 2019 RDS host from Windows 11 via VPN.
When trying to connect a copied or moved disk image file (*.VHD/*.VDI) of an Oracle VirtualBox virtual machine, you will receive an error:
VirtualBox - Error
Failed to open the hard disk image file FilePath.vhd.
Cannot register the hard disk FilePath.vhd <GUID> because a hard disk DifferentFilePath.vhd with UUID <GUID> already exists.
Result Code: E_INVALIDARG (0x80070057)
Component: VirtualBoxWrap
Interface:IVirtualBox {GUID}
Callee RC: VBOX_E_OBJECT_NOT_FOUND (0x80BB0001)
Continue reading “VirtualBox: Cannot Register the Hard Disk Already Exists”
Recently I have been favorably impressed with Chrome Remote Desktop features which allow to support remote users/friends/family members and access work computers remotely. I have easily configured access to my home computer from my office network. All you need is to install the Google Chrome browser on both devices, a Google account, and the chromoting service. Most popular are supported for remote connection: Windows, Linux, macOS, Android, and iOS.
Continue reading “Using Google Chrome Remote Desktop to Access Your Computers”
After an emergency shutdown of a physical server with an Active Directory domain controller role, the BSOD with an error stop code 0x00002e2 appears on boot. The error points out that the Active Directory database (NTDS.DIT) is damaged. In this article, we will figure out how to fix the ntds.dit file and start a domain controller (in our case, it is a server running Windows Server 2019).
Continue reading “Domain Controller Crashes on Boot with Stop Code 0xc00002e2”
If a Windows service or application writes logs not to the Event Viewer (.evt and .evtx files), but to plain text log files, you sometimes need to display and monitor new events in real-time.
Continue reading “Windows: Monitoring Logs and Text File Changes in Real Time”
Predictive IntelliSense is a new feature in PSReadline 2.1 and is available by default in PowerShell 7.2. When typing a command in the PowerShell console, Predictive IntelliSense suggests the appropriate commands you have previously typed (using the history of previous PowerShell commands). Predictive IntelliSense works differently than the TAB auto-completion feature (or Bash’s TAB auto-completion). the suggestion of subsequent characters in the command is displayed in gray text after the cursor.
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The Select-Object cmdlet allows you to display certain properties of an object in a PowerShell command. Select-Object can select unique objects, a specified number of objects, or objects at a specified position in an array. Also, some PowerShell cmdlets don’t display all of the object’s properties, and you must use Select-Object to display additional attributes.
Continue reading “Select-Object: Filtering Output in PowerShell”
By default, OpenVPN certificates are used to authenticate users. This means, that any user who has a *.ovpn file with connection settings and certificates can connect to your OpenVPN server. In OpenVPN, you can enable and configure user authentication through an LDAP server (Active Directory or FreeIPA).
Continue reading “Configure OpenVPN Authentication via LDAP (Active Directory)”
