In this article, we will show you how to generate an SSH key pair in Windows.

Prerequisites

Before we begin, you will need to make sure you have the following:

• A Windows computer with an internet connection.
• An account on the remote server to which you want to connect using SSH.

Step 1: Install PuTTY

The first step is to download and install PuTTY, a free and open-source SSH client for Windows. You can download PuTTY from the following link:

https://www.chiark.greenend.org.uk/~sgtatham/putty/latest.html

Once the download is complete, run the installer and follow the prompts to install PuTTY.

Step 2: Generate an SSH key pair

After installing PuTTY, launch PuTTYgen, which is a tool included with PuTTY that allows you to generate an SSH key pair. You can find PuTTYgen in the Start menu or by searching for it in Windows.

In the PuTTYgen window, click the “Generate” button. You will be prompted to move your mouse around the blank area below the progress bar to generate randomness. This is used to generate a strong and secure key pair.

Once the key pair is generated, you will see the public key and a few other details in the text field at the top of the window.

Step 3: Save the private key

Next, you need to save the private key on your local machine. To do this, click the “Save private key” button and choose a location to save the file. Make sure to save the file with a .ppk extension, as this is the format that PuTTY uses for private keys.

Step 4: Copy the public key

Finally, you need to copy the public key and upload it to the remote server. To do this, highlight the entire contents of the public key text field and copy it to your clipboard.

Then, log in to your account on the remote server and add the public key to the “authorized_keys” file. This file is usually located in the “.ssh” folder in your home directory. If the .ssh folder or the authorized_keys file does not exist, you will need to create them.

Step 5: Connect to the remote server using PuTTY (Optional)

Now that you have your SSH key pair set up, you can use PuTTY to connect to the remote server. To do this, launch PuTTY and enter the hostname or IP address of the server in the “Host Name” field. Then, in the “Category” tree on the left, navigate to “Connection > SSH > Auth”. In the “Auth” section, click the “Browse” button and select the private key file that you saved in step 4.

Finally, click the “Open” button to open the SSH connection to the remote server. You should be prompted to enter your username and password for the server. After entering the correct credentials, you should be logged in to the remote server.

Congratulations, you have successfully generated and used an SSH key pair to access remote server via PuTTY.

Additional Tips

• It is a good idea to protect your private key with a passphrase. To do this, enter a passphrase in the “Key passphrase” and “Confirm passphrase” fields in PuTTYgen before saving the private key. This will add an extra layer of security to your key pair, as anyone who tries to use your private key will need to enter the passphrase in order to access it.
• If you need to use your private key on multiple computers, you can use the “Export OpenSSH key” button in PuTTYgen to save the private key in a different format that is compatible with other SSH clients.
• If you need to generate an SSH key pair in a different format, such as RSA or DSA, you can use the “Parameters” section in PuTTYgen to select the desired algorithm.
• If you encounter any errors or issues when generating or using an SSH key pair, you can check the PuTTY documentation or seek help from a community of PuTTY users online.

In conclusion, generating an SSH key pair in Windows is a straightforward process that can provide an extra level of security when accessing remote servers. By following the steps outlined above, you can easily set up an SSH key pair using PuTTY and use it to securely connect to your remote server.

The post Generate the SSH Key Pair on Windows {5 Steps} appeared first on TecAdmin.

After searching about the issue, I found a suggestion in Google search to remove all ASP.NET temporary files. Once I removed all the temporary files, the application start working again.

Remove ASP.NET Temp Files in Windows

To clear the temporary files do the following on both the Web Server:

1. Log in to the server and open IIS.
2. Stop IIS service. Run “iisreset /stop” in the command prompt to stop the IIS service.
3. Navigate to the below directories:
   • “C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\”
   • “C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files\”
4. Remove all files under both directoires.
5. Start IIS service. Run “iisreset /start” in the command prompt to stop the IIS service.

Wrap Up

Even you can remove the temporary file without stopping the IIS server. Hope this tutorial helps you to resolve the caching-related issue on your Windows server.

The post How to Clear the ASP.NET Temporary files in Windows appeared first on TecAdmin.

In the previous article, you have learned about the installation of Python on a Windows system. This tutorial will help you to create a virtual environment in a Python application on Windows systems.

Create a Virtual Environment in Python

A Python module venv is available by default in Python 3.3 and later versions. To create a virtual environment, cd to your project directory and run the following command to create a new virtual environment.

1. Create the Environment: The following commands will create a new virtual environment under c:\Projects\Python-app\venv directory:

   cd c:\Projects\Python-app 
   python3 -m venv venv 
   

   

2. Activate the Environment: Now, we have a virtual environment, we need to activate it.

   .\venv\Scripts\activate 
   

   After you activate the environment, the command prompt will be changed to show the virtual environment.

   

Creating the requirements.txt File (Optional)

After you activate the virtual environment, you can add packages to it using pip. You can also create a description of your dependencies using pip.

Use the following command to create requirements.txt containing all the installed packages on your system.

pip freeze > requirements.txt

This file can be used by the other project collaborators to install or update Python modules on their system virtual environments using the following command.

pip install -r requirements.txt

Deactivate the Virtual Environment

You can close the virtual environment and return to normal system settings, by typing the deactivate command:

deactivate

After executing the above command, you’ll notice that the command prompt returns to normal.

Conclusion

This tutorial helped you to create a virtual environment for your Python application on the Windows system.

The post Creating Python Virtual Environment on Windows appeared first on TecAdmin.

The latest Windows 8 and 8.1 systems have Windows Firewall and the Windows 10 and above systems use Windows Defender Firewall. This tutorial is created on Windows 8.1, so the screenshots may differ for Windows 10 and above users.

Enable or Disable the Windows Firewall

Use the below steps to enable or disable a firewall on a Windows system.

1. Search for the Windows firewall in the menu. The screen may differ as per the Windows version.
   

   

2. On this screen you will see the firewall is active or inactive. Under the left sidebar menu click “Turn Windows Firewall on of off”

   

3. Now, you can turn on or turn off the firewall for the private or public networks.
   • Private network settings: This will enable/disable firewall for the local area network (LAN).
   • Public network settings: Use this section to turn on/off access for public (Internet) users

   After selecting the appropriate option, click on the OK button.

   

4. All done. You can revert changes anytime with same steps

Wrap Up

Again we are advised to keep the firewall active on your system. This tutorial helped you to turn on/off the Windows firewall.

The post How to Enable / disable Firewall in Windows appeared first on TecAdmin.

We can start/stop/restart any Windows service in two ways. One is to use of Windows graphical user interface, which is an easier option. Do you know that these services can also be managed via a command line interface? Yes, it can be. In this tutorial, we will discuss an option to manage a service state via the command-line interface.

How to Start/Stop a Windows Service using CLI

Windows Service Controller (sc) is a command line utility that communicates with Service Control Manager and services. It also provides you options to create/delete a Windows service and/or manage its state. You can also chagne the startup type of service.

Use the following commands to start or stop a Windows service:

• Start Service:

  sc start ServiceName 
  

• Stop Service:

  sc stop ServiceName 
  

You can also change the Windows service startup type using the sc command. The following examples will help you to change service startup to manual or disable it.

• Set start type to manual:

  sc config ServiceName start=manual 
  

• Disable service:

  sc config ServiceName start=disabled
  

Conclusion

This tutorial helped you to manage the Windows service state using the command line interface. Additionally provides you info about changing service startup type in the Windows system.

The post How to Start/Stop Windows Service via Command Line appeared first on TecAdmin.

Follow these quick instructions to change the Windows system hostname (computer name).

How to Change Windows Hostname

Similar to other operating systems, Windows systems also allow us to change its hostname. Changing the hostname required a system reboot to apply it.

Quick Instructions

Here are the short and quick instructions to change the hostname of the Windows system.

1. Open my computer properties
2. Click change settings under computer name, domain and workgroup settings
3. Click Change button under computer name tab
4. Set a new hostname (computer name) of your system and click OK
5. This will require a system reboot. Reboot system immediately or use option to latest
6. All done

Once the system is rebooted the Windows hostname will be changed.

Detailed Instructions to Change Windows Hostname

Now, follow the detailed instructions to change the hostname of the Windows system with images.

1. Open the properties of Computer or My Computer or This PC based on your operating system version.

   

2. Click on change settings hyperlink under computer name, domain and workgroup settings section. See the below image:

   

3. The above will open a new dialog box. In the Computer Name tab click Change button in front of “To rename this computer or change its domain or workgroup”.

   

4. You will see another dialog box with an input box. Here set a new name for the Windows hostname and click OK.

   

5. A dialog box will open to allow the system to reboot immediately or reboot it manually latest. Select an option of your choice.

   In some of the operating system versions, You will not see a later reboot option. The system will ask you to save any unsaved files and restart the system immediately.

6. Once the Windows system rebooted, check the new hostname with a command prompt.
   

   

7. All done

Conclusion

This tutorial provides you with the instructions to change the computer name (hostname) of a Windows system. The article provides short instructions as well as detailed instructions to perform hostname changes.

The post How to Change Windows Hostname (Computer Name) appeared first on TecAdmin.

This tutorial will help you to install and manage multiple Node.js versions on Windows using NVM.

How to Install NVM on Windows

The coreybutler has build the nvm installer for the Windows systems. Visit the below link to download the NVM installer for the Windows systems.

And download the nvm-setup.zip file of the latest version.

Extract the downloaded archive file from your system.

You will get a node-setup.exe file under the archive file. Double click the node-setup.exe file to begin the Node installation on Windows.

Follow the installation wizard to complete the installation of Node on Windows.

Installing Node.js on Windows using NVM

As you have already installed the NVM on your system. Now, you can install any version of Node.js on the Windows system. To install the most recent version use “latest” and to install latest stable version use “lts” with nvm install command.

• Use the following command to install most recent Node.js version

  nvm install latest 
  

  

• To install the latest stable version, execute the following command

  nvm install lts 
  



• You can also install a specific version like 14.15.0.

  nvm install 14.15.0 
  

You can follow the same commands to install multiple node versions on a single system.

Setup Default Node.js Version

You can change the default active Node version with the following command. For example, to setup Node 14.1.50 as default version, type:

nvm use 14.15.0 

Once the new version activated, type:

node --version 

This will show the current active Node.js version. See the below screenshot:

Uninstall Node Version

You can remove unused older Node version’s from your system with the following command.

nvm uninstall 14.15.0 

Change the version number as per your requirements. The above command will remove Node 14.15.0 from your system.

Conclusion

This tutorial helped you for installing NVM on Windows system. Also provides you commands to install specific Node.js version on Windows system.

Remember that the NVM is installed for a specific user. So to use NVM for another user, need to separately install it from that account.

The post How To Install NVM on Windows appeared first on TecAdmin.

1. How to Check Windows Uptime with Task Manager

A task manager is a computer program used for checking the process and services running and their details. You can also find details about the resource utilization like Memory and CPU uses at runtime. This is also a quick and preferred way for Windows users to find computer uptime.

1. Log in to your Windows system.
2. Right click on task bar and click on Task Manager to launch.
3. Click “More details”, If the task manager opened in compact view.
4. Go to Performance tab
5. In CPU section, you will find computer uptime like below screenshot

As per the above screenshot, this computer is up from 33 Days and 33 minutes.

2. Check Computer Uptime with Command Prompt

You can also find the Windows uptime with the command-line options. Here we will discuss the two commands that provide the uptime details.

A. Using WMIC Command:

WMIC (Windows Management Interface Command), is a simple command-line utility that provides information about the running system. With the help of this command, we can find the last boot-up time.

wmic path Win32_OperatingSystem get LastBootUpTime

B. Using systeminfo Command:

The systeminfo command displays a list of details about your operating system, computer software, and hardware components. You can also check for the value “System Boot Time” to get the computer uptime.

systeminfo | find "System Boot Time"

3. How to Check Windows Uptime with PowerShell

Launch a Powershell window and type the below command to find the last reboot time of the current system.

Get-CimInstance -ClassName Win32_OperatingSystem | Select LastBootUpTime

You can also view the computer uptime in the number of days, hours, and minutes formats. Execute the below command and check the results.

(get-date) - (gcim Win32_OperatingSystem).LastBootUpTime

You can also store the output of the above commands to a variable. Which can be helpful for scripting purposes. The below command will store all values in the “uptime” variable.

$uptime = (get-date) - (gcim Win32_OperatingSystem).LastBootUpTime

Next, extract the specific values only and print them on the screen.

Write-Output "The Windows Uptime is >> $($uptime.days) Days, $($uptime.Hours) Hours and $($uptime.Minutes) Minutes"

Output:
The Windows Uptime is >> 35 Days, 12 Hours and 46 Minutes

Conclusion

In this tutorial, you have learned various methods for checking Windows uptime. This guide covers the 3 methods like Task manager, command prompt, and PowerShell to get computer uptime.

The post How to Check Computer Uptime in Windows appeared first on TecAdmin.

You can achieve this by making little changes to the system registry keys. Once the changes are done, multiple users can connect to your system using the RDP client. You can also limit the number of users who can connect at a time.

In this tutorial, we will discuss enabling and disabling multiple remote desktop sessions in Windows servers in 2012, 2012 R2, 2016, 2019 and 2022.

Enable Multiple RDP Sessions

Follow the below steps to enable multiple remote desktop sessions on a Windows system.

1. Log in to the Windows system.
2. Open the start screen (press the Windows key) and type “Edit group policy” or “gpedit.msc”, and launch it.
3. Navigate to Computer Configuration >> Administrative Templates >> Windows Components >> Remote Desktop Services >> Remote Desktop Session Host >> Connections.
4. Double click on “Set Restrict Remote Desktop Services user to a single Remote Desktop Services session and set this to Disabled.
5. Next, double click on “Limit number of connections” and set the RD Maximum Connections allowed to 999999. But, just use 2 sessions that is free with Windows license but to allow more than 2 session required CAL license.

Below is the screenshots of changes being made:

Disable Multiple RDP Sessions

To disbale the multiple remote desktop sessions, follow below instructions:

1. Log in to the Windows system.
2. Open the start screen (press the Windows key) and type “Edit group policy” or “gpedit.msc”, and launch it.
3. Navigate to Computer Configuration >> Administrative Templates >> Windows Components >> Remote Desktop Services >> Remote Desktop Session Host >> Connections.
4. Double click on “Set Restrict Remote Desktop Services user to a single Remote Desktop Services session and set this to “Enabled.

Wrap Up

This tutorial helped you to enable for disable multiple remote desktop sessions on a single Windows system. That is useful for the teams working on the same remote systems.

The post How To Enable Multiple RDP Sessions on Windows Server appeared first on TecAdmin.

Prerequisites

Log in as an Administrator account to your Windows Server 2019 system.

Change User Password in Windows Server 2019

Let’s follow the below steps to change a user’s password in Windows Server 2019.

1. Search for the system Control Panel and launch it.

   

2. Under the User accounts click “Change account type” link:
   

3. You will see a list of all user accounts. Select the user account, you need to change the password.

   

4. Make sure the correct account is selected. Now click on the “Change the password” link.

   

5. Enter your current user password, then provide a new password to set for the user. Make sure you have noted this password in a safe place. Now click on the “Change password” button.

   

Conclusion

Congratulations, You have successfully changed the password of a user in Windows Server 2019.

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