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The Windows Registry is a collection of settings that Windows and applications can use. It is a directory which stores settings and options for the operating system for Microsoft Windows. It contains information and settings for all the hardware, operating system software, most non-operating system software, users, preferences of the PC, etc.

The Registry consists of the following 5 Root Keys. Root Keys contain SubKeys. Subkeys may contain subkeys of their own too and contain at least one value, called its Default Value. A key with all its subkeys and values is called a Hive.

Each key has one of the Data Types – data types:






In this post, we will show you how to create a Registry Key in Windows 10.

Before you begin, it is always a good idea to either back up the Registry or create a System Restore Point.

The hierarchy of Windows Registry

To edit the Registry, we use the built-in Registry Editor or regedit. It displays a tree-like navigation structure.  The topmost is your computer, followed by a list of folders, and subfolders. These folders are called KEYS, and there are five fixed set of folders under the Computer.

HKEY_CLASSES_ROOT: Contains file extension association information which helps the computer understand what to do with a task when asked.

HKEY_CURRENT_USER: It contains configuration information for Windows and software for the current user.

HKEY_LOCAL_MACHINE: It stores the configuration for the software installed on the computer, and also for the Windows OS

HKEY_USERS: Here you can find a user-specific configuration for all users on that computer.


These are the master keys as you cannot create a NEW KEY under Computer – but you can generate new keys under any of these master keys.

How to create a Registry Key in Windows 11/10

1] Using Registry Editor

You also have the option to Rename, Export, Copy, and set Permissions.

2] Using the Command Line

You can also use Command Line to manipulate registry keys along with tips, features and safety methods.

3] Use Notepad to create REG files

4] Third-Party Tools

If you find the default registry editor complex, you can use tools like RegCool, Registrar Registry Manager Lite, and Registry Commander. They offer features like Undo, Redo, permission management, tabbed window, import, export, favorites and so on.

3] Use Programming

If you are an application developer, you should use programming to manage your application settings in the registry. Here is an example, and it will vary depending on the language you use to develop the application.

RegistryKey key = Registry.LocalMachine.CreateSubKey(@"SYSTEMCurrentControlSetserviceseventlogMyApplicationMyService"); key.Close();

Now that you know how to do it, we also recommend you to read what each of these means. It’s essential, and will only help you to make sure the changes you make are correct.

What makes a Registry Key?

If you imagine “Key” as a folder, the rest of them are different types of file types that store various kinds of values. So if you build an application, you can have a master folder, and then subfolders to separate one set from another. Here is a bit about each of them:

DWORD &  QWORD: Double Word can store a 32-bit unit of data, while QWORD can store 64-bit of data.  

String Value (REG_SZ): It can store either a Unicode or an ANSI string, and contains a null at the end.

Multi-String value: When you want to store multiple numbers of String Value, you can use this. However, make sure to terminate it by an empty string (). Here is a simple example:


Note “” at the end marks the end of the first string, and the last marks the end of the multi-string.

Binary Value: The simplest of all – it contains 0 and 1.

We hope that you find this post useful.

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How To Remove File Type Associations Using Registry Editor In Windows 11/10

In Windows 11 or Windows 10, you can Configure, Export, Import File Associations and even set or change file associations and extensions using GUI, but there is no option provided to delete an existing file type association. In this post, we will walk you through the steps on how to remove File Type Associations using Registry Editor.

What is File Type Association?

Basically, a file association associates a file with a specific application that is able to open the file. Similarly, a file type association associates a type of file (eg the .docx file) with a corresponding application (Microsoft Word). A single file extension might have more than one association for performing different actions – an application might be associated with a file extension to open a specific type of file, but another program might also be associated to open and edit the files.

Remove File Type Associations using Registry Editor

Associating a file type with a program can be done via several ways such as using the Open with dialog and selecting the Always use this app to open checkbox, or via Default Programs or Default Apps. File type association is very helpful, but it might get corrupted which can cause a file to be opened with another application that may not suitable. In this case, you should remove file type associations for the file to stop opening the file with the associated app by default.

For the purposes of this post, let’s assume you’ve incorrectly associated a file type named .bak, you can easily reset all Apps and File Associations to default in Windows 11/10. But, if you want to remove the association instead, you can perform the task using the registry by following our instructions below. In the case where all the file extensions have changed to some unknown file format, this could help!

Since this is a registry operation, it is recommended that you back up the registry or create a system restore point as necessary precautionary measures. Once done, you can proceed as follows:

Press Windows key + R to invoke the Run dialog.

In the Run dialog box, type regedit and hit Enter to open Registry Editor.

Navigate or jump to the registry key path below:


At the location, on the right pane, make a note of the (default) value data. It’s the ProgID associated with that file type.

Next, go to the following HKEY_CURRENT_USER keys and delete the .bak key as well.

HKEY_CURRENT_USERSOFTWAREMicrosoftWindowsCurrentVersionExplorerFileExts.bak HKEY_CURRENT_USERSOFTWAREMicrosoftWindowsRoamingOpenWithFileExts.bak

Exit Registry Editor when done.

Restart PC.

The file association settings for .bak file type should now be removed on your computer and the deleted file type will be set as unknown by Windows.

This is how you can remove File Type Associations using Registry Editor in Windows 11/10.

Related post: How to use Unassociate File Types remove File Type associations.

How do I remove default program from file type?

To remove default program from file type in Windows 11/10, do the following:

In the Set Associations window, scroll down the list until you see the file extension that you want to change the default program for.

How do I reset the default associations in Windows 10?

To reset all Apps and File Associations to default in Windows 11/10, do the following:

Press Win+I to open Windows Settings.

Scroll down to the bottom.

Where are file type associations stored in the registry?

How To Open .Key Files On Windows 10/11 [Step

How to Open .key Files on Windows 10/11 [Step-by-Step] You can use iCloud to open keynotes files




It’s really easy to open a .key file, basically, a presentation created with Apple’s Keynote software


Nowadays, most presentation software can open KEY files so you should try Microsoft PowerPoint.

You can also use other similar tools to open the .key presentations like the ones listed below.

Another good option is to convert the KEY files to other file formats that you can open on your PC.



To fix Windows PC system issues, you will need a dedicated tool

Fortect is a tool that does not simply cleans up your PC, but has a repository with several millions of Windows System files stored in their initial version. When your PC encounters a problem, Fortect will fix it for you, by replacing bad files with fresh versions. To fix your current PC issue, here are the steps you need to take:

Download Fortect and install it on your PC.

Start the tool’s scanning process to look for corrupt files that are the source of your problem

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readers this month.

Keynote is the presentation software included with Apple’s office suite. The application is Apple’s alternative to MS PowerPoint. However, Windows doesn’t support Keynote’s KEY file format.

Consequently, there is hardly any Windows software compatible with that format type. This doesn’t mean you can’t open Keynote presentations in Windows, but most users convert them to a compatible format.

How can I open KEY files on a PC? 1. Open Key files with PowerPoint or LibreOffice Impress

A great and easy way of opening KEY file presentations is to use good old Microsoft PowerPoint or the free LibreOffice Impress app. In fact, nowadays, any presentation software can be used to open KEY files.

Unfortunately, not all the programs will use all the features of the original KEY presentation. You may lose the formatting and if you had any transition effects they might be also lost.

However, any of these programs, including PowerPoint and Impress will allow you to open, start the presentation, or even save the KEY files.

You can save them but, of course, you won’t be able to do that in the original format. Microsoft PowerPoint will save the file as a PPT or PPTX format while LibreOffice Impress will offer the ODP and ODPX formats additionally.

After you edit the KEY presentation, all you need to do is to save the file by selecting the Save option in both apps and choose the format you want to use with the presentation.

These great tools are also great for converting the files before sending the presentations to someone who doesn’t have a Mac computer but as mentioned earlier, they will lose formatting and effects so edit them before sending.

Microsoft Powerpoint

Microsoft Powerpoint is the best presentation software on the market and it can also be used to open KEY files.

Check price Visit Website

⇒ Get LibreOffice Impress

2. Open KEYs With File Viewer Lite

You can open the Keynote presentations with that software, but it doesn’t include any editing options. File Viewer Lite is also freeware that’s compatible with Windows platforms from XP up.

You can check out File Viewer Lite on this website page. Press the Download Now button there to save the software’s setup wizard, and then open its installer.

Expert tip:

File Viewer Lite supports drag and drop so that you can drag Keynote files from File Explorer (or the desktop) onto the software’s window to open them in FVL.

⇒ Get File Viewer Lite

3. Open Keynote files in iCloud

To open and edit a Keynote presentation with more Windows software, you’ll probably need to convert its format type. However, you can still edit KEY presentations in Windows with Apple’s iCloud.

ICloud is a range of cloud-based services that includes the Keynote, Pages, and Numbers web apps. As such, you can set up an iCloud account and open and edit a KEY file in a Windows browser.

This is how you can open a KEY file in the Keynote web app.

4. Convert KEYs to PPT or PDF Format

First, go to the Zamsar page to open ZAMZAR’s KEY to the PPT page.

Press the Choose Files button, and then select a KEY presentation to convert to PPT.

Select the PPT format type from the Convert files to the drop-down menu.

Enter an email address to send the PPT file.

Press the Convert button.

Open your ZAMZAR email, which will include a link to the PPT file. Then you can save the presentation to your hard drive.

Open the Zamzar page to convert KEY files to PDFs with ZAMZAR. Converting them to Portable Document Format is almost entirely the same, except that you select PDF from the Convert files to drop-down menu.

Thereafter, you can open the Keynote presentation in PowerPoint and Adobe Acrobat or other slideshow and PDF software.

Converting files to alternative formats is the usual way to open documents, presentations, and images that Windows doesn’t widely support. Of course, you’re not exactly opening a KEY file by changing its format.

However, converting presentation and text document files to alternative formats doesn’t usually have much impact on their formatting.

If you need to edit a Keynote file, PowerPoint’s PPT is probably the best format to convert it to as that’s more widely supported by Windows presentation applications.

PDF is one of the best universal file formats, but most PDF viewer software doesn’t include editing options. You can convert KEY files to both PPT and PDF formats with the ZAMZAR web tool as follows.

5. Convert the presentation to ZIP format

ZIP is a compressed archive format that you can convert KEYs to. You can preview the contents of a Keynote presentation by converting KEY files to ZIP format.

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How To Download Windows Updates Manually In Windows 11/10

Most of us use Microsoft Update to keep our Windows 11/10/8/7 operating system and Microsoft software updated. But if you want to, for some, reason, download the updates manually and save it to your computer, this is how you can go about it:

How to download Windows Updates manually in Windows 11?

While creating Windows 11, the developers made sure to analyze the data for which settings are used more and which are used less. No doubt Windows Updates were prioritized and a separate menu was created for the same. The procedure to download Windows updates manually in Windows 11 is as follows:

Select Settings.

In the Settings menu, check the list on the left-hand side.

Windows Update would be the last option. Select it, please.

If any Update has failed to install, you will see it mentioned.

Note down the KB number of the Windows Update.

Once you have the number, you need to manually download the KB from the Microsoft website, the procedure of which is explained below.

Download Windows Updates manually in Windows 10

You can also Pause Windows Updates, change Active Hours or look at the Update History.

If any Update has failed to install, you will see it mentioned this.

Note down the KB number of the Windows Update.

Note down the KB number mentioned in the bracket.

Manually download the KB from the Microsoft website

This way, you will be able to install the update manually on any one or more of your computers, as long as it applies to the installed operating system or software.

Downloading, saving, and installing Windows Update manually may be done if you need to save the updates for some reason or if you find that you are unable to update your Windows using Windows Update.

Microsoft Update Catalog is a service from Microsoft that provides a listing of software updates that can be distributed over a corporate network. Using the Microsoft Update Catalog can prove to be a one-stop location for finding Microsoft software updates, drivers, and hotfixes.

WSUS Offline Update is a free tool using which, you can update Microsoft Windows or Microsoft Office easily without having an Internet connection.

Portable Update lets you update Windows 10 offline without an Internet connection.

Do we need to update Windows manually?

Ideally, Windows updates are performed by the system automatically. We don’t really need to hit the “Check for updates” button manually. But, if a third-party software stops the process, it needs to be restarted manually.

Furthermore, if you believe Windows hasn’t been updated for quite a while, performing a manual update could be very helpful. Personally, I check for a manual update occassionally just in case anything has been missed.

Why are Windows Updates so important?

One might argue that Windows Updates simply modify the features of the operating system or push fixes to existing problems, which many users might not require. So, why is it still important to make sure your system is up to date?

The reason is simple – security updates. Cybercriminals keep getting smarter and find ways to hack into the current system. To counter the same, Microsoft keeps launching security updates. These security updates are obviously important, else your system would be at risk.

Also see:

How To Flush Dns Cache In Windows 11/10

Internet connection problems? DNS cache corrupted? Facing DNS issues or problems? Maybe you need to flush Windows DNS Cache. If your computer finds it difficult to reach a certain website or server, the problem may be due to a corrupt local DNS cache. Sometimes bad results are cached, maybe due to DNS Cache Poisoning and Spoofing, and therefore need to be cleared from the cache to allow your Windows computer to communicate with the host correctly.

Typically, there are three types of caches in Windows that you can flush easily:

Clearing the Memory Cache can free up some system memory while clearing the Thumbnail Cache can free up space in your hard disk. Clearing the DNS Cache can fix your internet connection problem. Here’s how you can flush the DNS cache in Windows 11, Windows 10, Windows 8 or Windows 7.

Flush DNS Cache in Windows 11/10

To flush the DNS Cache in Windows 11/10 you need to:

Open an administrative command prompt window as an administrator

Type ipconfig /flushdns and hit Enter

You should see – Windows IP Configuration. Successfully flushed the DNS Resolver Cache

Exit CMD

Your DNS cache should have been reset.

Let us see it in a bit more detail.

Next, type the following and hit enter:



You should be able to see a confirmation dialog window:

Windows IP Configuration. Successfully flushed the DNS Resolver Cache.

Once the requisite process is complete and existing cache data has been flushed, you may execute the command mentioned below:

ipconfig /registerdns

This step is to register any DNS records that you or some programs may have recorded in your Hosts file.

How to flush DNS Cache using PowerShell

To flush DNS Cache using PowerShell, run PowerShell as administrator and execute the following command:


Read: How to clear or flush Google Chrome DNS Cache

How to refresh DNS cache every few hours automatically?

Take a backup of your registry before making any changes.

Open Run prompt, type regedit, and press the Enter key

This will open Registry Editor

Navigate to:


Set the Name as MaxCacheTtl and set the value in seconds. The default is 86400 seconds which is one day.

Repeat the same and create another DWORD with the name MaxNegativeCacheTtl and value as 5

This will make sure the local DNS cache is refreshed every few hours.

How to display DNS Cache

If you wish to confirm if the DNS cache has been cleared, you can type the following command and hit Enter:

ipconfig /displaydns

This will display the DNS cache entries if any.

How to Turn Off or Turn On DNS Cache

To turn off DNS caching for a particular session, type net stop dnscache and hit Enter.

To turn on DNS caching, type net start dnscache and hit Enter.

Of course, when you restart the computer, the DNC caching will, in any case, be turned on.

NOTE: Here’s a Batch File to Release TCP/IP, Flush DNS, Reset Winsock, Reset Proxy all at once.

How to Disable DNS Cache

If for some reason you wish to disable DNS caching, type services in start search and hit Enter to open the Services Manager. Here locate the DNS Client service.

The DNS Client service (dnscache) caches Domain Name System (DNS) names and registers the full computer name for this computer. If the service is stopped, DNS names will continue to be resolved. However, the results of DNS name queries will not be cached and the computer’s name will not be registered. If the service is disabled, any services that explicitly depend on it will fail to start.

These resources may also interest you:

How To Compress A Video In Windows 11

Are you getting “File is too large” error when you try to send a video to someone via a sharing or social platform? Or do you just want to save your disk space by reducing the file size of your video files? This guide will show you several methods on how to compress a video to reduce its file size in Windows 11.

The most common practice of reducing the file size of a video is reduce the video resolution. Raw video recorded using a camera or screen recorder usually has a very large resolution. If the video is to be seen on a rather smaller device, you can reduce its resolution to a smaller size such as 720p, 480p, etc. to significantly reduce its file size.

Some video players and apps will allow you to export a video with a different resolution. In Windows 11, you can use the built-in Photos app’s Video Editor feature to change the resolution of a video. Alternatively, you can also use a third party software such as VLC player to convert a video to a different resolution, but with much more choices of video resolutions.

Follow the steps below to change a video resolution using Photos app in Windows 11.

1. First, search for and open Video Editor via Start.

4. To edit the video, drag the video from the Project library to the are where it says “Drag items from the project library here”.

VLC media player is a popular media player that supports a wide range of audio and video formats. But did you know that you can also use VLC player to compress videos? With VLC player, you can easily compress your videos without sacrificing too much quality.

3. Next, select a Profile that best describe on what device the video will be viewed on. For example, if you select the “Video for iPod HD/iPhone/PSP” profile, VLC will convert the video to 480p along with other settings that best suited to be viewed on an iPhone, which will significantly reduce the video file size if the original resolution is rather large.

Trimming a video means to remove unwanted parts of the video to create a clip out of it. Doing so will reduce the video’s total file size as the video gets shortened. You can trim a video file using any video editor. In Windows 11, you can use the Photo’s app built-in Video Editor feature to trim a video without installing any third party software.

To learn how to do so, go to: How to edit and trim a video in Windows 11.

ZIP is a file format that supports lossless data compression. You can compress your video files by compressing it using Zip, or other compression formats such as RAR or 7Zip.

In the Add to archive window, select a compression level. The higher the compression level (“Ultra” being the highest level), the better the compression and the smaller the file size after compressed.

If a video is too large in size that there is no way to compress it small enough to fit into the sharing platform such as Facebook, WhatsApp, etc., you can upload your video file onto a file sharing service such as Google Drive or Dropbox, and then send the video link to whoever you want to share with so that they can download it using the link.

Since the file size limit for individual file you can upload to these sharing services is usually very large, you can upload your original video or compressed video without the concern of file size limit.

Alternatively, you can also upload your video directly to YouTube and share the video only with whoever you want to share with by setting the video as “unlisted” or “private”.

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