SQL Server: reduce the size of the transaction log

In this “troubleshooting” tutorial, we will see how to reduce the transaction file (ldf) of a SQL Server database. Normally this file is truncated during server backups (Veeam, Altaro …) or by the maintenance plan. In certain situations with SQL Express, the “truncation” is not done and if the size of the file is badly …

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Outlook : autodiscover disable SCP Active Directory

In this troubleshooting tutorial, we’ll see how to prevent Outlook autodiscover from using the Active Directory SCP point for mailbox configuration. What this type of “trick” is used for: If the computer environment in which you already have an Exchange installation and the mail servers have not been properly uninstalled. If you find yourself in …

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Use the Telnet client to test a network connection

Presentation In this tutorial, we will see how to use the Telnet client to test the connection to a service (IP: PORT) for diagnostic purposes. Telnet is a client / server TCP protocol that listens on port 23 which allows the administration of equipment (switches, firewall …) and of certain servers (UNIX, LINUX). It is …

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RDS farm: delete a server not available in the deployment

In this tutorial, we will see how to remove a server from a deployment that is no longer available. When connecting to the service broker, the following message is displayed: The following deployment servers are not in the server pool1. SERVER-FQDN .Add them to the server pool This type of error occurs if the server …

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Active Directory: Restore default GPOs Default Domain Policy / Default Domain Controller Policy

In this tutorial, we will see how to restore GPO Default Domain Policy / Default Domain Controller Policy to default. On domain controllers, a DCGPOFIX command line tool is available to restore the 2 default policies. Before proceeding with the restoration of the policies, I advise you to make a backup of this one before. …

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Security: prevent local logon on Windows servers

Intro In this tutorial, we will see how to prevent local logon on Windows servers. What you should know is that by default all users are allowed to log on locally to Windows except for domain controllers. For servers in Workgroup, the problem is less posed but for servers members of a domain, all users …

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Modify the subnet mask of a DHCP scope on Windows Server

Introduction In this tutorial, we will see how to modify the subnet mask of a DHCP scope on Windows Server. If we look in the properties of the scope, we realize that it is not possible to modify the subnet mask. The “modification” of the DHCP scope is done in several stages: Exporting the DHCP …

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Active Directory: access the Active Directory Schema console

The Active Directory Schema console is not available natively, it is necessary to register it in order to access it. This console is to be used with great care, improper handling can put the entire Active Directory forest in error. This console gives access to the role FSMO: Schema Master. 1. Open a command prompt …

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Veeam: Resolving the Volume Problem of Backups on Deduplicated Servers

Symptom On Windows servers with deduplication enabled, at regular intervals the backup size is increased. Below are several screenshots showing the problem: Reason The problem is not with Veeam software, but with deduplication on Windows Server. When configuring deduplication, a memory cleanup job is configured to optimize deduplication, by default this is done every Saturday …

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Sysprep: resolve the error: Windows could not finish System

Symptom After running a sysprep the following error is displayed during reboot. Resolution When the message appears, press Shift + F10 to open a DOS prompt. On the Hyper-V console, use the virtual keyboard of the host Enter the following commands to launch the Windows Setup Wizard: Complete the wizard by configuring Windows, when you …

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