Fixing “sshd: no hostkeys available -- exiting” in Ubuntu (VMware / Cloned VM)

If you’re trying to start SSH on Ubuntu and encounter this error:

sshd: no hostkeys available -- exiting.

Don’t worry — this is a common issue, especially when working with cloned virtual machines or golden images.

In this guide, we’ll break down:

• ✅ What this error means
• 🔍 Why it happens
• ⚙️ Step-by-step fix
• 🧠 Best practices for future

---

🚨 What Does This Error Mean?

SSH (Secure Shell) requires host keys to identify the server securely.

These keys are stored in:

/etc/ssh/ssh_host_*

If these keys are missing, SSH cannot start — resulting in:

sshd: no hostkeys available -- exiting.

---

🔍 Why This Happens

This issue typically occurs in these scenarios:

🧩 1. Cloned Virtual Machines

When you clone a VM, you may remove host keys intentionally to avoid duplication.

🧹 2. Golden Image Preparation

During template creation, admins often delete SSH keys for security reasons.

⚠️ 3. Manual Deletion or Misconfiguration

Accidental removal of /etc/ssh/ssh_host_* files.

---

⚙️ Step-by-Step Fix

🔹 Step 1: Generate New Host Keys

Run the following command:

sudo ssh-keygen -A

This will generate all required SSH host keys automatically.

---

🔹 Step 2: Restart SSH Service

sudo systemctl restart ssh

---

🔹 Step 3: Verify SSH Status

sudo systemctl status ssh

You should now see:

active (running)

---

🔹 Step 4: Confirm SSH is Listening

ss -tulnp | grep :22

If everything is working, SSH should be listening on port 22.

---

🔐 Test SSH Connection

From your host machine:

ssh username@your-ip-address

Example:

ssh shashwat@192.168.59.18

---

🧠 Best Practices (Important)

If you’re working with VMs, templates, or automation:

✅ Always regenerate SSH keys after cloning

sudo ssh-keygen -A

---

✅ Use cloud-init (Advanced)

Automate:

• Hostname
• SSH keys
• Network config

---

✅ Never reuse SSH host keys across machines

This can lead to:

• Security risks
• SSH warnings
• Connection issues

---

🎯 Summary

Issue	Fix
SSH not starting	Generate host keys
Error: no hostkeys available	sudo ssh-keygen -A
Service failing	Restart SSH

Google App for Windows

 Google App for Windows 🔥 | Search Anything Instantly (Alt + Space Magic!)

Google has launched a powerful new tool for Windows users — the Google App for Windows, and it completely changes how you search on your PC! 🚀 With a simple shortcut (Alt + Space), you can instantly search everything — from your files and apps to Google Drive and the entire web — all in one place. This app works like a supercharged version of Spotlight search, bringing speed, AI, and smart features directly to your desktop. ⚡ Key Features 👉 Universal search (files, apps, web, Drive in one place) 👉 Instant access using Alt + Space shortcut 👉 Built-in Google Lens to search anything on your screen 👉 AI-powered answers with follow-up queries 👉 Floating, resizable search bar on desktop 👉 Dark mode support #GoogleAppWindows, #GoogleNewApp, #WindowsTools, #ProductivityTools, #AITools, #TechIndia, #GoogleLens, #SmartSearch, #WindowsTips, #TechUpdates, #FutureTech, #AIProductivity, #DesktopTools, #GoogleAI, #TechExplained,google app for windows, google windows app features, alt space shortcut windows, google lens windows pc, ai search windows, best windows productivity tools, google search app pc, windows spotlight alternative, google ai tools pc, new google app 2025, windows 11 tools, google drive search windows, desktop search app google, tech review google app, ai tools for windows

Warp AI Terminal 🔥 | The Future of Coding? Agentic Dev Environment Explained!

 

Warp AI Terminal 🔥 | The Future of Coding? Agentic Dev Environment Explained! What if your terminal could think, assist, and even act like a developer? 😳💻 In this video, we explore Warp, the modern agentic development environment that is redefining how developers interact with the terminal. 🚀 Unlike traditional terminals, Warp combines AI + productivity + developer workflows to make coding faster, smarter, and more intuitive. ⚡ Key Features 👉 AI-powered command suggestions & automation 👉 Natural language to terminal commands 🤯 👉 Block-based terminal (clean, readable output) 👉 Built-in collaboration tools 👉 Warp Drive (save & reuse workflows) 👉 Super fast Rust-based performance

Watch video to know moare

Error Message in DBeaver connecting using jdbc: Public Key Retrieval is not allowed

Fixing “Public Key Retrieval is not allowed” Error in MySQL with DBeaver

 

If you are trying to connect MySQL 8+ with DBeaver and suddenly see this frustrating error:

❌ Public Key Retrieval is not allowed

Don’t worry — this is a very common issue and the fix is simple once you understand why it happens.

---

🔍 Why This Error Occurs

MySQL 8 uses a new authentication method called:

caching_sha2_password

For security reasons, Java-based tools like DBeaver (which use JDBC drivers) refuse to automatically fetch the public key from the server unless you explicitly allow it.

So when DBeaver tries to connect, it fails with:

Public Key Retrieval is not allowed

This is not a server crash, not a firewall issue, and not a wrong password problem — it’s just a security restriction in the driver.

---

✅ The Quick & Easy Fix (Recommended for Local/LAN Use)

Step 1: Open your connection in DBeaver

• Right-click your MySQL connection → Edit Connection

Step 2: Go to Driver Properties

Add or set these two properties:

Property	Value
allowPublicKeyRetrieval	true
useSSL	false

Step 3: Click Test Connection → Finish

That’s it. Your connection should work immediately.

---

🧠 What This Setting Does

• allowPublicKeyRetrieval=true → Allows the client to fetch the MySQL public key securely.

• useSSL=false → Disables SSL (fine for local or LAN setups).

---

🛡️ Permanent & Cleaner Fix (Server Side – Best for Production)

Instead of changing client settings everywhere, you can switch the MySQL user to the old compatible authentication method:

Login to MySQL:

sudo mysql

Run:

ALTER USER 'shashwat'@'%' IDENTIFIED WITH mysql_native_password BY 'YourPassword';
ALTER USER 'shashwat'@'localhost' IDENTIFIED WITH mysql_native_password BY 'YourPassword';
FLUSH PRIVILEGES;

Now you can connect from DBeaver without any special options.

---

🔎 Check Which Auth Plugin Your User Uses

SELECT user, host, plugin FROM mysql.user WHERE user='shashwat';

If it shows:

mysql_native_password

You’re fully compatible with all tools.

---

⚠️ Security Note

• Using allowPublicKeyRetrieval=true is safe on local network

• Do NOT expose MySQL directly to the internet without:

  • Firewall

  • SSL

  • IP restrictions

---

🏁 Conclusion

This error looks scary, but it’s actually:

✅ A client-side security restriction, not a server failure.

Once you fix it, MySQL + DBeaver works perfectly.

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How to add "Copy to" and "Move to" options to the right-click context menu in Windows:

Method 1: Registry Editor (Manual)

Note: Back up your registry first or create a system restore point.

Add "Copy to" Option:

1. Press Win + R, type regedit, press Enter
2. Navigate to:

text

HKEY_CLASSES_ROOT\AllFilesystemObjects\shellex\ContextMenuHandlers

3. Right-click ContextMenuHandlers → New → Key
4. Name it: Copy To
5. Double-click (Default) on the right
6. Enter this value:

text

{C2FBB630-2971-11D1-A18C-00C04FD75D13}

Add "Move to" Option:

1. In the same ContextMenuHandlers folder
2. Right-click → New → Key
3. Name it: Move To
4. Double-click (Default) and enter:

text

{C2FBB631-2971-11D1-A18C-00C04FD75D13}

Method 2: Using Free Tools (Easier)

Create two text files with these contents:

CopyTo.reg:

Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\AllFilesystemObjects\shellex\ContextMenuHandlers\Copy To]

@="{C2FBB630-2971-11D1-A18C-00C04FD75D13}"

MoveTo.reg:

Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\AllFilesystemObjects\shellex\ContextMenuHandlers\Move To]

@="{C2FBB631-2971-11D1-A18C-00C04FD75D13}"

Save as .reg files and run them.

To Remove (if needed):

Simply delete the Copy To and Move To keys you created in the registry.

How it works:

• After adding, when you right-click a file/folder:
• Copy to → Lets you choose a destination folder to copy to
• Move to → Lets you choose where to move the file/folder
• Both show a folder browser dialog for destination selection

Safety Note: If using registry method, always back up your registry first. The tools mentioned in Method 2 are safer for most users. 

#NVIDIA #Studio vs #GameReady #Drivers: Complete Comparison

 

🔹 1. NVIDIA Game Ready Driver (GRD)

Purpose:
Optimized for gaming and new game releases.

Characteristics:

• Best performance and compatibility for latest games

• Gets updates very frequently

• Optimized for:

  • New AAA games

  • DLSS updates

  • Ray tracing profiles

  • Day-1 game launch optimizations

• Slightly less tested for professional apps

Best for:

• Gaming

• Casual streaming

• General use

---

🔹 2. NVIDIA Studio Driver (SD)

Purpose:
Optimized for creative and professional workloads.

Characteristics:

• Extensively tested with:

  • Adobe Premiere Pro

  • After Effects

  • Blender

  • DaVinci Resolve

  • Unreal Engine

  • Stable Diffusion

  • AI / ML tools

• Updates less frequently

• Focus on:

  • Stability

  • Reliability

  • Fewer crashes

  • Predictable behavior in professional software

Best for:

• Video editing

• 3D rendering

• AI / ML (YOLO, Stable Diffusion, LLMs, etc.)

• Content creation

• Production machines

---

🔹 3. Can You Install Both at the Same Time?

❌ No. You can only have ONE driver installed at a time.
They replace each other.

But…

✅ You can switch between them anytime using NVIDIA App / GeForce Experience.

---

🔹 4. How to Switch Between Them (Very Easy)

1. Open NVIDIA App or GeForce Experience

2. Go to Drivers

3. Click the 3-dot menu (top right)

4. Choose:

   • Game Ready Driver

   • OR Studio Driver

5. Click Download & Install

It takes ~3–5 minutes.

---

🔹 5. Which One YOU Should Keep (Based on Your Use)

You:

• Run YOLO

• Use AI models

• Do video content

• Test OS, software, tools

• Also probably do some gaming

✅ Recommendation:

Keep NVIDIA Studio Driver installed.

Because:

• It is more stable

• Works perfectly fine for games too (95–99% same performance)

• Much better for:

  • AI frameworks (CUDA, TensorRT, PyTorch)

  • Blender

  • Video editing

  • LM Studio / Jan / Stable Diffusion

---

🔹 6. When Should You Switch to Game Ready?

Only switch to Game Ready if:

• A new game is released and has performance/bug issues

• NVIDIA specifically recommends a GRD for that game

• You are gaming heavily for some time

Then you can switch back to Studio after.

---

🔹 7. Simple Rule

Work / AI / Editing → Studio Driver
Heavy Gaming / New Game → Game Ready Driver

---

🔹 8. Important Tip

Both drivers:

• Use the same core driver

• Same CUDA support

• Same RTX features

• Difference is testing, certification, and stability focus

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Permission Denied while deleteing a file or folder in Windows

“Access denied” while deleting a directory usually means the folder is in use, protected, owned by another user, or you lack sufficient permissions. Below is a systematic, professional checklist to resolve it, starting from safest to strongest methods.

• Problem: "Folder Access Denied" or "File in Use."

• Solution: Use the takeown and icacls commands shown in this video to regain control and delete any directory instantly.

1. Close Programs Using the Folder (Most Common Cause)

If any process is using a file inside the directory, Windows will block deletion.

What to do

• Close all apps

• Reboot once and try deleting again

• If still blocked:

  • Open Task Manager

  • End suspicious or related processes

You can also check locks using tools like Resource Monitor → CPU → Associated Handles.

---

2. Delete Using Command Prompt (Admin)

Open Command Prompt as Administrator

rd /s /q "C:\path\to\directory"

• /s → removes all files and subfolders

• /q → quiet mode (no prompts)

If this works, the issue was Explorer-level permissions.

---

3. Take Ownership of the Directory (Very Common Fix)

If the folder belongs to another user/system account:

Step 1: Take ownership

takeown /f "C:\path\to\directory" /r /d y

Step 2: Grant full permissions

icacls "C:\path\to\directory" /grant administrators:F /t

Step 3: Delete

rd /s /q "C:\path\to\directory"

---

4. Folder Has “Read-only / System” Attributes

Remove attributes

attrib -r -s -h "C:\path\to\directory" /s /d

Then delete again.

---

5. File Path Is Too Long (Windows Limitation)

If the directory contains very long file names:

Use extended path syntax

rd /s /q "\\?\C:\path\to\directory"

---

6. Folder Is Protected by Windows (System / Program Files)

Examples:

• C:\Windows

• C:\Program Files

• Old antivirus / driver folders

Recommendation

• Do not delete unless you are certain

• Prefer uninstalling the associated application

• Or boot into Safe Mode, then delete

---

7. Delete in Safe Mode (Strong but Safe)

1. Press Win + R → msconfig

2. Boot tab → Safe boot → Minimal

3. Restart

4. Delete the directory

5. Revert Safe Mode setting and reboot normally

---

8. Last Resort: PowerShell Force Delete

Open PowerShell as Administrator:

Remove-Item "C:\path\to\directory" -Recurse -Force

---

Common Scenarios & Fix Mapping

Scenario	Solution
Folder in use	Close app / reboot
Permission issue	takeown + icacls
System-protected	Safe Mode
Long path	\\?\ syntax
Hidden/system attributes	attrib -r -s -h
Corrupted folder	PowerShell delete

---

Important Safety Note

If this directory is:

• Inside Windows, Program Files, or related to drivers

• Linked to antivirus, Docker, WSL, or virtual machines

Confirm before deleting, as removal may break software or OS components.

✨ Tired of the same old Windows Start Menu and Taskbar?

 

✨ Tired of the same old Windows Start Menu and Taskbar? In this video, I’ll show you how to completely customize your Windows experience using Windhawk, a powerful and lightweight tool that lets you tweak the Start Menu, Taskbar, and other UI elements exactly as you want them! 🚀 Whether you’re looking to make your desktop look cleaner, more modern, or just different, this tutorial covers installation, configuration, and the best Windhawk mods that transform Windows into something truly personal. 💡 You’ll learn: How to download and install Windhawk safely How to customise the Taskbar appearance and behaviour How to tweak the Start Menu layout for better usability How to add, remove, and modify Windows features using Windhawk mods The best settings and tips for a seamless, stylish desktop ⚙️ Windhawk is perfect for users who want control, flexibility, and creativity in their Windows interface — without breaking the system or using complex scripts. 📺 Watch till the end to see how you can make Windows truly yours! 👍 Don’t forget to Like, Share, and Subscribe for more tech tweaks, customisation tips, and software explorations. #Windhawk, #WindowsCustomization, #Windows11, #Windows10, #TaskbarCustomization, #StartMenuTweaks, #CustomizeWindows, #TechTutorial, #DesktopMods, #WindowsMods, #ProductivityTips, #TechGuide, #WindhawkTutorial, #CustomizeTaskbar, #WindowsTweaks, #SoftwareTools, #UIEnhancement, #WindowsTips, #ModernDesktop, #TechExploration, Windhawk, Windows customization, Windows 11 tweaks, Windows 10 customization, taskbar mods, start menu mods, customize start menu, customize taskbar, Windhawk tutorial, how to use Windhawk, Windows UI customization, Windows desktop tweaks, change start menu style, change taskbar style, tech tutorial, PC customization, Windows hacks, desktop mods, modern taskbar, Windows productivity, software tools, Windows utilities, tech channel, tech review, customize Windows interface

Ultramarine Linux: The Fedora You've Been Waiting For? 🚀 Installation & Full Tour!

I'm diving into the gorgeous world of Ultramarine Linux! 🌊 In this video, I'll be installing and exploring this Fedora-based gem that promises a polished, out-of-the-box experience right from the start. Is it the user-friendly powerhouse it claims to be? Let's find out together!

🚀 What is Ultramarine Linux?

Ultramarine Linux is a stunning, beginner-friendly distribution built on the rock-solid foundation of Fedora. It takes the raw power of Fedora and polishes it to a brilliant shine, giving you a desktop that's ready to use for work, play, and everything in between—right after installation! ✨

✨ Features & Advantages We Explore:

• 🎨 Breathtaking & Familiar Desktop
  Choose your flavor! Ultramarine comes with beautifully customized versions of GNOME, Pantheon (from elementary OS), and more. It feels familiar but looks incredibly fresh and modern! 🖼️
• ⚡ Fedora's Power, Without The Fuss
  Get all the benefits of Fedora—cut-edge software, fantastic SELinux security, and rock-solid stability—without the post-installation setup hassle. It's Fedora, pre-tuned for perfection! 🛠️
• 📦 "Just Works" Out of The Box
  Say goodbye to wrestling with codecs and repositories! 🎵🎬 Ultramarine includes essential media codecs, RPM Fusion, and a curated selection of software so you can start being productive immediately.
• 🛡️ Built-in Security & Performance
  Leverages Fedora's enterprise-grade security features for peace of mind. Plus, it's optimized for a smooth and responsive experience, even on modest hardware! 🔒💨
• 🎯 Designed for Everyone
  Whether you're a Linux newbie tired of complex setups, a developer needing a robust platform, or a power user who appreciates a refined desktop, Ultramarine has something for you! 👨‍💻👩‍🎨

📋 In This Video, You'll See:

• 🛠️ A smooth, step-by-step installation process
• 🖥️ A deep dive into the stunning Ultramarine desktop (which flavor did I pick?!)
• ⚙️ Exploring the pre-loaded apps and customization options
• 🔄 Testing out the software stores and package management
• 🎮 Checking out gaming and multimedia performance
• 💬 My final honest verdict and who should use it!

👀 Who is Ultramarine Linux For?

• 👉 Fedora Curious Users who want an easier starting point.
• 👉 Linux Beginners who want a "just works" distro that looks amazing.
• 👉 Professionals & Developers who need a stable, modern OS.
• 👉 Anyone who appreciates a beautiful, well-designed desktop.
• 👉 Former Windows/macOS users looking for a polished alternative.

💡 Ready to try Ultramarine Linux? Download it here: https://ultramarine-linux.org/

What's your favorite Fedora-based distro? Have you tried Ultramarine? Let me know your thoughts in the comments below! 👇

If you enjoyed this tour, please give the video a THUMBS UP! 👍 It really helps the channel!

Subscribe and hit the bell icon 🔔 so you don't miss my next Linux adventure!

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What is Zorin OS? Zorin OS is a powerful, secure, and unbelievably beautiful Linux distribution based on Ubuntu. It's specifically designed to make your switch from Windows or macOS buttery smooth! 🧈

 

I'm diving into the world of Linux with Zorin OS! 🤯 In this video, I'll be installing and exploring this stunning operating system that promises to be the perfect replacement for Windows or macOS. Is it truly beginner-friendly? Can it really revive an old PC? We're going to find out together! 🚀 What is Zorin OS? Zorin OS is a powerful, secure, and unbelievably beautiful Linux distribution based on Ubuntu. It's specifically designed to make your switch from Windows or macOS buttery smooth! 🧈 ✨ Features & Advantages We Explore: 🎨 Familiar Desktop in Seconds! The "Zorin Appearance" app is pure magic! ✨ Transform your desktop layout to look and feel like Windows 11, Windows 10, or even macOS with just a click. Say goodbye to the learning curve! 😍 ⚡ Lightning Fast Performance Tired of slow boot times and lag? Zorin OS is incredibly lightweight and can breathe new life into old computers! Your decade-old PC will feel brand new again! 💻✨ 🛡️ Rock-Solid Security & Privacy Enjoy peace of mind! 🙏 Zorin OS is built on Linux, which means no viruses, no malware, and no creepy data tracking. You are in control of your system and your data. 📦 Loaded with Great Software Get started right away! It comes pre-installed with essential apps like Firefox, LibreOffice, and more. Need more? The built-in Software store has thousands of free applications! 🛒 💸 Completely FREE to Use! That's right! Zorin OS is 100% free and open-source. No expensive licenses, no subscriptions. It's freedom for your computer! 🕊️ 📋 In This Video, You'll See: 🛠️ Step-by-step installation process (It's easier than you think!) 🖥️ A deep dive into the stunning Zorin OS desktop 🎛️ Customizing the layout with Zorin Appearance 🔄 Exploring the pre-installed apps and software center 💬 My final thoughts and verdict! 👀 Who is Zorin OS For? 👉 Windows Users looking for a modern, fast, and free alternative. 👉 Mac Users curious about the Linux world. 👉 Anyone with an old, slow laptop or PC that needs a performance boost. 👉 Students, developers, and privacy-conscious users. 👉 Linux beginners taking their first steps! 🐧 💡 Considering the switch? Download Zorin OS here: https://zorin.com/os/ Did I miss any awesome features? What's your experience with Zorin OS? Let me know in the comments below! 👇 Like, Subscribe, and hit the bell icon so you don't miss my next Linux adventure! 🔔 Zorin OS, Zorin OS 18, Linux for Beginners, Zorin OS Installation, Linux Tutorial, Zorin OS Review, Windows Alternative, Best Linux Distro, Zorin OS Explore, Linux Desktop, Open Source, Free OS, Revive Old PC, Linux for Windows Users, Zorin OS Features, How to Install Zorin OS, Linux 2025, Ubuntu, Zorin OS Pro, Lightweight OS, Privacy Focused OS, Linux Gaming, Linux Demo, From Windows to Linux #ZorinOS #Linux ,#ZorinOS17 #LinuxForBeginners ,#WindowsAlternative, #OpenSource ,#LinuxReview, #TechTutorial ,#LinuxDesktop ,#ReviveOldPC, #Privacy, #FreeOS, #LinuxInstallation ,#OpenSourceSoftware, #LinuxExplore