Software Licensing Service 0xC004F009 Error

Windows 11 comes with glass and transparency effects by default once it is installed. The transparency effect looks really good but if in any case, you do not like them, you can easily turn them off very easily

1. Open settings inside Windows 11
2. Inside settings click on Accessibility in the sidebar
3. Click on Visual Effects on far-right
4. Inside Visual effects, settings click on the switch beside Transparency effects to OFF

Windows will automatically save settings and apply changes right away. Just close your settings application and continue with work. You can always turn it back ON if you change your mind.

One of the preferred ways to upgrade Windows 10 is by creating a bootable USB drive. However, you might change your mind when you encounter an error during the Windows 10 Setup that says, “We can’t find a USB flash drive”. Worry not for this error can be fixed using some suggestions that will be provided in this post. The funning thing about this error in Windows setup is that the computer says it’s not there when it’s clearly there. To fix this problem, you need to check if the USB device is accessible on your computer or you can also try a different USB device. In addition, you could check if there are any issues with both the USB 3.0 and USB 2.0 ports as it could be the reason why you’re getting the error or fix the bad sectors in the USB drive as well as see if the USB drive is set as the primary drive.

Option 1 – Try to check if the USB is accessible on your PC

The first thing you can do to resolve the problem is to check if you can access your USB device from your computer. All you have to do is open File Explorer and check if the USB device is listed there or not.

Option 2 – Try to connect a different USB device

The next thing you can do to fix the error is to try connecting a different USB device, specifically the one that has more significant storage space. You also have to make sure that it’s working on a different PC.

Option 3 – Fix any issues with the USB 3.0 and 2.0 ports

Although the USB 3.0 ports are compatible with the USB 2.0 ports, it does not necessarily mean that there wouldn’t be any problem when you use them which is why it’s best to fix any issues in them or better yet, use a compatible drive.

Option 4 – Try to fix the bad sectors in the USB drive via CHKDSK

When it comes to some issues concerning the hard drive or removable devices, there is a utility in Windows that might help which is called “chkdsk”. To use it, follow the steps below.

• Tap the Win + S keys to open the Search box.
• Then type “command prompt” in the field and from the search results that appear, right-click on Command Prompt and select “Run as administrator”.
• After opening an elevated command prompt, copy and paste the following command and hit Enter:

CHKDSK [volume [[path] filename]] [/F] [/V] [/R] [/X] [/C] [: size]]

Note: In the command given above, “[/F]” will try to fix the system errors while “[/R]” will be the one to fix the bad sectors.

• Now if you are prompted to run CHKDSK after your reboot your PC, just tap Y and reboot your PC.
• If CHKDSK is not able to find any errors, tap the Win + E keys and navigate the access window. From there, right-click on the concerned drive and click on Properties.
• After opening Properties, click on the tab Tools and then click on the “Check” button under the Error-checking section.
• Wait until the process is completed and then restart your computer.

Option 5 – Try checking if the USB is set as the primary drive

You might also want to check if the USB drive is set as the primary drive because if it is, then it won’t appear on the list. It could also be that the USB drive has a primary disk in it. To undo it, you need to use the DISKPART utility.

• In the Start Search, type “command prompt” and right-click on Command Prompt from the search results, and then select the “Run as administrator” option.
• Next, execute the “diskpart” command to initiate the DISKPART utility.
• After that, type the “list disk” command and tap Enter to display the list of disks on the computer. You have to take note of the drive number or letter of the concerned USB drive.
• Once done, type the “select disk <X>” command where X is the drive letter or number and tap Enter.
• Then execute the “list partition” command to see the list of all the partitions in your computer. It should be listed as 0, 1, or 2. 0 is the primary partition.
• Now type the “select partition 0” command and tap Enter and then type “delete partition” to delete the selected partition.
• You can do the same to the other partitions as well and when you’re done, execute the format command to turn the USB drive into a standard one.

If you have multiple products with Windows on them, Copy & Paste text between them is easy as 1,2,3 and we will be happy to tell you how can you do it. Hello and welcome everyone, today we will see how can we share text information between 2 devices using Windows 10 in instant. In order for you to be able to share text information between devices, there are two prerequisites that you must meet. The first is that all devices must be connected to the internet, the second is that you must have a Microsoft account. If you have both of these things continue with the tutorial, if you do not have a Microsoft account go to Microsoft website and create one for free. Also, know that this option needs to be turned ON on all devices in order to work. So steps we will explain will have to be done on each device, if you already have some device logged in and connected to Microsoft account, you can skip setting it up. Click on ⊞ WINDOWS and click on settings. Then click on System. Once you are in the system, on the left tabs find and click on Clipboard. If you are not logged in to your Microsoft account do so on the right panel by locating Sync across devices and click on sign in. When you are signed in click on the option to turn it on. One option is turned ON, you will be greeted with two choices, to copy everything from the clipboard automatically or to choose text which you want to sync and paste it with ⊞ WINDOWS + V. Choose whatever better suits your needs, and you are done. Repeat these steps for other devices and you are done.

Still sitting on the fence about upgrading to Windows 11 because you don’t know what to expect? Interestingly, the new edition somehow manages to be both a total revamp and still very similar to its predecessor in many ways. It’s really something to experience for yourself.

We do want to give you a sneak peek, though. So here’s an overview of the biggest changes Windows 11 brings to the table.

What’s different in Windows 11?

1. Visual changes

The first thing anyone will notice after switching to Windows 11 is the striking visual difference. The entire interface is smoother, cleaner and more minimalistic than on Windows 10, even resembling the macOS in some instances.
Perhaps the most obvious change in appearance is the Start menu and Taskbar location, which is now at the bottom center. It’s actually very neat, but if you’re someone who loves familiarity, don’t worry, you can move it back to the left.

Moreover, you’ll notice that the Taskbar includes a Microsoft Teams icon by default (which you can, of course, remove) and that Live Tiles are gone. The News and Interests section has also been removed - or, shall we say, replaced. As opposed to Windows 10, news, weather forecasts and other information are now displayed as widgets.

To add to the cleanliness of the UI, Microsoft also enhanced the ‘Snap Layouts’ feature to help you better organize your windows and maximize screen real estate. It’s similar to app grouping on your smartphone. In Windows 10 this feature is slightly restricted, as it requires some manual resizing and dragging. In Windows 11, you can just hover over the minimize/maximize option on a window, select a layout and throw the windows in there. 

2. New accessibility features

Microsoft has certainly paid attention to accessibility with Windows 10, but Windows 11 takes this to a whole new level.

One of the ways Windows 11 has taken things up a notch is by adding the long-awaited ‘Live Captions’ feature and advanced Narrator options.

Live Captions apply both to media played on your PC as well as your own speech when you’re using the microphone. Keep in mind that, as with almost all kinds of subtitles, you have to be prepared for a potential delay. However, it’s barely noticeable and doesn’t take away from the usefulness of this awesome new feature whatsoever.

As for the Narrator, there are three new voice packs to choose from. Microsoft has tried to put emphasis on a more natural voice than we are used to. So, now you can choose between Aria, Jenny and Guy, who will read pretty much anything off your screen out loud. Aside from this, Microsoft has also expanded the list of braille displays supported by the Narrator feature. 
For users with anxiety or trouble concentrating, a welcomed addition is the Focus app, which is no longer part of the Clock app. It’s now separate and called ‘Focus Sessions’, automatically triggering the Do Not Disturb mode when activated. It blocks all pop-ups and flashes and lets you work in peace until you’re ready to switch it off.

3. Android apps

Android users may rejoice! Windows 11 supports the use of your favorite applications now. 

Microsoft has done this by integrating the Amazon Appstore to the Windows 11 Microsoft Store. From there, you can download your favorite Android apps and use them on your PC in a smartphone-like window.

Unfortunately not too many apps are supported at this time, but Microsoft is working on making the emulation possible for many more. Also, the option is only available in specific regions at this moment - check out if you’re one of the lucky ones.

4. Improved gaming performance

Avid gamers will be happy to hear that Microsoft has put some effort into streamlining Windows 11 for their gaming needs.

To give gamers a supreme visual experience, Windows 11 offers the ‘Auto HDR’ feature. As long as your monitor is HDR-compatible, this feature will automatically adjust the colors, brightness and contrast of games without any input from you. 

Another update is DirectStorage, which we were introduced to in Windows 10 already. In Windows 11, it’s been improved to tweak loading times and overall gaming performance efficiency even better. The predisposition for it to work optimally is that your device has an NVMe SSD. 

The Xbox Game Bar also helps gamers towards a smoother experience. It allows in-game screenshots, viewing processes that are running (similar to the Task Manager), monitoring the CPU and GPU performance and frame rate, integrating the Xbox App and more. There’s also a number of widgets you can now use with the Game Bar, for example the Spotify widget.

Another cool addition is the Xbox Game Pass, which unlocks hundreds of games to play on your Xbox App, with new additions coming in every month.

5. Smart App Control

Aside from a sleek new look and better accessibility for all users, Windows 11 also comes with a security power-up. Bear in mind that this feature is only available on clean Windows 11 installs. 

Smart App Control (SAC) is an AI-powered new feature designed to protect your PC from potential threats. It blocks untrustworthy apps and adware and helps detect potentially unwanted apps, maintaining your PC’s performance and keeping your system safe.

It comes with an ‘Evaluation’ mode, which you should definitely select when running SAC for the first time. That way, the app monitors your usage and assesses whether you’re a candidate for SAC. Some users need it to be on all the time, for others it might be too distracting. Evaluation mode will turn SAC on or off based on your usage.

Don’t disable SAC again unless you’re absolutely sure you don’t need it, since reenabling it will require a fresh install. We recommend you don’t turn it off, as it is a neat feature protecting your data and files from malware at all times.

Summary

Have we piqued your interest in trying Microsoft’s latest OS? It’s a pretty exciting new iteration, but we’ll let you find out for yourself. We hope you like it!

Athwbx.sys or the Qualcomm Atheros driver file is known to trigger several Blue Screen of Death errors. This occurs when the driver gets corrupted or when the operating system is unable to access or find it. In addition, bad sectors in the hard disk or RAM can also cause BSOD errors. The athwbx.sys file is known to cause the following BSOD errors listed below:

• SYSTEM_THREAD_EXCEPTION_NOT_HANDLED (athwbx.sys)
• STOP 0x0000000A: IRQL_NOT_LESS_EQUAL (athwbx.sys)
• STOP 0x0000001E: KMODE_EXCEPTION_NOT_HANDLED (athwbx.sys)
• STOP 0×00000050: PAGE_FAULT_IN_NONPAGED_AREA (athwbx.sys)
• Your PC ran into a problem and needs to restart. You can search online later for this error: athwbx.sys

Before you proceed with the troubleshooting tips given below, you might want to try performing System Restore as it could resolve Blue Screen errors caused by the athwbx.sys file. To run System Restore, follow these steps:

• Tap the Win + R keys to open the Run dialog box.
• After that, type in “sysdm.cpl” in the field and tap Enter.
• Next, go to the System Protection tab then click the System Restore button. This will open a new window where you have to select your preferred System Restore point.
• After that, follow the on-screen instructions to finish the process and then restart your computer and check if the problem is fixed or not.

If System Restore didn’t help in fixing the Blue Screen error, now’s the time for you to resort to the troubleshooting tips provided below but before you get started, make sure that you create a System Restore point first.

Option 1 – Try recreating the athwbx.sys file

The first thing you can try is to recreate the athwbx.sys file. Every time your Windows 10 PC boots up, it looks for all the system drivers in place and if it is unable to find them, it tries to create them. This is why if you remove your corrupt driver file, chances are, you might get a fixed file recreated just for you. How? Refer to the steps below.

• Boot your Windows 10 PC in Safe Mode.
• Then open File Explorer and navigate to this location: C:/Windows/System32/drivers
• From there, look for the file named sys and rename it to athwbx.old.

Note: As you can see, the file’s extension has changed from .sys to .old.

• Now restart your computer and check if the athwbx.sys Blue Screen error is now fixed.

Option 2 – Try to update or rollback your device drivers

If the first option didn’t work for you, then it’s time to either update or roll back the device drivers. It is most likely that after you updated your Windows computer that your driver also needs a refresh. On the other hand, if you have just updated your device drivers then you need to roll back the drivers to their previous versions. Whichever applies to you, refer to the steps below.

• Open the Devices Manager from the Win X Menu.
• Then locate the device drivers and right-click on them to open the Properties.
• After that, switch to the Driver tab and click on the Uninstall Device button.
• Follow the screen option to completely uninstall it.
• Finally, restart your computer. It will just reinstall the device drivers automatically.

Note: You can install a dedicated driver on your computer in case you have it or you could also look for it directly from the website of the manufacturer.

Option 3 – Run the System File Checker Scan

System File Checker or SFC is a built-in command utility that helps in restoring corrupted files as well as missing files. It replaces bad and corrupted system files with good system files. To run the SFC command, follow the steps given below.

• Tap Win + R to launch Run.
• Type in cmd in the field and tap Enter.
• After opening Command Prompt, type in sfc /scannow

The command will start a system scan which will take a few whiles before it finishes. Once it’s done, you could get the following results:

1. Windows Resource Protection did not find any integrity violations.
2. Windows Resource Protection found corrupt files and successfully repaired them.
3. Windows Resource Protection found corrupt files but was unable to fix some of them.

• Restart your computer.

Option 4 – Try to run the CHKDSK utility

Running the CHKDSK utility might also help you resolve the athwbx.sys Blue Screen error. If your hard drive has issues with integrity, the update will really fail as the system will think that it’s not healthy and that’s where the CHKDSK utility comes in. The CHKDSK utility repairs hard drive errors that might be causing the problem.

• Open Command Prompt with admin privileges.
• After opening Command Prompt, execute the following command and hit Enter:

chkdsk /f /r

• Wait for the process to be completed and then restart your computer.

Option 5 – Run the Memory Diagnostic Tool

Running the Windows Memory Diagnostic tool in Windows 10 might also help you in fixing the athwbx.sys Blue Screen error. Refer to the steps below on how to run this tool:

• Tap the Win + R keys to open Run and type exe and hit Enter to open the Windows Memory Diagnostic Tool.
• After that, it will give two options such as:
  • Restart now and check for problems (Recommended)
  • Check for problems the next time I start my computer
• Once your computer has restarted, perform a basic scan or you could also go for the “Advanced” options such as “Test mix” or “Pass count”. Simply tap the F10 key to start the test.

Note: After you select the option, your PC will restart and check for memory-based issues. If it finds any issues, it will automatically fix them and if there’s no issue found, then it’s most likely not a memory-based issue so you should try the other options given below.

Option 6 – Run the Blue Screen Troubleshooter

The Blue Screen troubleshooter is a built-in tool in Windows 10 that helps users in fixing BSOD errors like athwbx.sys. It can be found on the Settings Troubleshooters page. To use it, refer to these steps:

• Tap the Win + I keys to open the Settings panel.
• Then go to Update & Security > Troubleshoot.
• From there, look for the option called “Blue Screen” on your right-hand side and then click the “Run the troubleshooter” button to run the Blue Screen Troubleshooter and then follow the next on-screen options. Note that you might have to boot your PC into Safe Mode.

The Microsoft Store error 0x80073d12 occurs when you try to download software from the store. In order to solve the issue follow the presented guide step by step in the order presented.

1. Check do you have enough hard drive space for installation

   Store locates and assigned space on the hard drive before it installs the application, if there is not enough space available it will return the given error. Go to file explorer and check is there enough space available.

2. Check that game is not expansion

   If you are trying to install expansion for the game without owning the required base game, you will receive the mentioned error. Check the store page to see if there are some prerequisites for the game like other games or packs.

3. Install the game from my library

   Press Start. Open the Microsoft Store App. Click the See more … button at the top right of the MS Store app’s window. Click Download and updates on the menu. Click Downloads on the left to open My library. Then click Ready to install to open a list of apps. Click the Install button for the game app that you need to install.

4. Install on another partition

   It was reported that an error vanishes if installation is placed on another partition instead of the default C drive.

The Event Viewer in the Windows operating system is used to troubleshoot any computer issues. It is one of the most useful tools that keep logs of both security and system events. It also monitors for both software and hardware problems in the computer. This tool is the only one with amazing features that maintain logs about everything that’s going on in the computer system. It keeps track of all the information to the point where going over them will take a lot of time. Luckily, the Event Viewer tool now allows users to create custom views where you can set the filters and sort the data recorded to limit the information details to only what you’re interested in seeing. For instance, if you want to troubleshoot with one hard drive, you can just create a special custom view to display only the hard drive warnings in the security logs. This will save you hassle and time. Take note that the logs in the Event Viewer are divided into two main categories namely the Window logs and the Application and Services logs. You can just set the filter to the logs by their event id, specific date, and many other events when you have to troubleshoot some problem in your computer. So if you are trying to troubleshoot a problem in your Windows 10 computer and you’re checking the Event Viewer, read on as this post will guide you in creating custom event views in the Event Viewer. To get started, refer to the instructions given below. Step 1: Go to the Start menu and in the search box, type “event viewer” and then click on Event Viewer from the search results to open it. Step 2: After opening Event Viewer, click on Custom Views located in the left pane of the window. Step 3: Next, click on the Administrative events under the Custom View to create special log views. Step 4: Then on the right side of the window, click on Create Custom View to open the Create Custom View window. Step 5: There is a logged drop-down list under Filter. From there, you have the option to choose an appropriate predefined time or use a custom time range for your Custom log views. Step 6: After that, select an appropriate event level for your custom view. You have fine entry-level options to choose from such as critical event level, error, warning, information and verbose.

• Critical – select this if you want to see the events that require your immediate attention in the custom view.
• Error – select this if you want your Event Viewer to display the events that are less critical but hints at the problems.
• Warning – select this event-level if you want to see the event with the potential problem but may not bound to happen.
• Verbose – select this if you want to see detailed information about all the events.

Step 7: After you’ve selected the event level, you now have to select how you want the events to be filtered. They can either be filtered By the log or By the source.

• By the log – you can select two options called Windows log and, Application and Service logs. The Windows logs allow you to filter the logs created during events like setup, security, applications, and system events. While the Application and Service logs filter the log created by the installed applications in your system.
• By the source – select this if you want your Custom View to search for information in event sources. It allows you to view events in detail for various applications and devices.

Note: You have the option to further customize the event logs with more filters like Event IDs, task category, keywords, User, and Computer. Using these additional filters, you can choose to filter the events in the special views by specifying event id numbers in the Event IDs, entering predefined Windows words in the Keyword, specify the user accounts in the User field, as well as choose the system from the server to maintain logs in the Computer field. Step 8: Once you’re done customizing the log filter, click on OK to apply the changes made. Step 9: After that, a Save Filter should be displayed in the Custom View window. Just enter the Custom View name and select the Event Viewer folder where you want to save the Custom view. The folder name should be Custom View by default. And if you want, you can also create your own folder if you want your custom views to be visible to all the system users. Step 10: Next, check all the Users box located in the lower corner of the window and then click the OK button after you’re done. You should now see the customized filter you just created on the left side of the window. Just click on it to check your filtered events in the center of the Event Viewer window. And for you to save the custom view logs, simply right-click on the Custom views you created and then click on Save All Events in the Custom View As from the drop-down menu. Then put a name on the file and select the appropriate location where you want to save the logs and click on the Save button. Note that the log file is saved with the “.EVTX” file extension and when you double click on it, it will open the file in the Event Viewer.

These days, Google Chrome is definitely one of the most used browsers in the browser. Google has almost created a nearly perfect product that rarely experiences problems. However, a lot of users have reported an issue where some files they’re downloading or their downloads in their Google Chrome browsers are stuck at 100%. So if you are one of these users, read on as this post will guide you on what you can do to resolve the problem. This kind of problem could be caused by several factors. It is possible that the file download process could be blocked by a third-party antivirus or it could be that the content-length header could be missing from the server. Aside from that, a Google Chrome extension could also be the culprit or it could be that the current installation of the browser could be corrupted. This kind of problem can get really annoying as the download process has already utilized system resources as well as take up your time. Thus, you need to fix the problem using several suggestions. You can try to clear the browser cache, disable the Chrome virus scan, whitelist the file on the third-party antivirus program, put your browser in Incognito mode and download the file again. On the other hand, you could also try to reset or reinstall the browser. For more details, follow the options provided below.

Option 1 – Try to clear browser cache and try downloading again

There are times when some data in the browser is conflicting with the loading of the website and triggers some problems like download getting stuck at 100%. And so you can try to clear your browser’s data. This might be a very basic solution but oftentimes it works in fixing this kind of error in Google Chrome. Follow the steps below to clear the data in your browser.

• Open your Google Chrome browser.
• After that, tap the Ctrl + H keys. Doing so will open a new panel that allows you to delete the browsing history and other data in your browser.
• Now select every checkbox that you see and click on the Clear data button.
• Then restart your Chrome browser and check if you can now complete the download again.

Option 2 – Try disabling Chrome virus scan

The next thing you can do to resolve the problem is to disable the Chrome virus scan. It is possible that the virus scan is the one that’s preventing the download to be completed, thus, try to disable it and see if it works.

Option 3 – Whitelist the file you’re downloading in your antivirus program

The download getting stuck might also be caused by your antivirus program which could be interfering it from running. To fix this, you have to whitelist dism.exe. How? Refer to these steps:

• Open the Windows Defender Security Center from the system tray area.
• Next, click the “Virus & threat protection” option and then open the “Virus and threat protection settings”.
• After that, scroll down until you find the “Exclusions” and click on the “Add or remove exclusions” option.
• Then click the plus button and select the type of exclusion you want to add and from the drop-down list, select Folder.
• Next, navigate to this path and select the WinSxS folder: C:/Windows/WinSxS
• When a User Account Control or UAC prompt, just click on Yes to proceed.

Option 4 – Try downloading the file in Incognito mode

There are certain browser extensions, especially those security programs, that prevent any suspicious files from being downloaded. So the easy way to fix the problem is to launch the Chrome browser in Incognito mode and then try to download the file again. Additionally, you might want to consider disabling the problematic extension.

Option 5 – Reset Chrome

Resetting Chrome can also help you fix the problem. This means that you will be restoring its default settings, disabling all the extensions, add-ons, and themes. Aside from that, the content settings will be reset as well and the cookies, cache, and site data will also be deleted. To reset Chrome, here’s what you have to do:

• Open Google Chrome, then tap the Alt + F keys.
• After that, click on Settings.
• Next, scroll down until you see the Advanced option, once you see it, click on it.
• After clicking the Advanced option, go to the “Restore and clean up option and click on the “Restore settings to their original defaults” option to reset Google Chrome.
• Now restart Google Chrome.

Option 6 – Try to clean reinstall Chrome

There are instances when programs leave files behind after you’ve uninstalled them and the same thing can happen to Chrome so before you reinstall Chrome, you have to make sure that you have deleted the User Data folder. To do so, refer to the following steps:

• Hit the Win + R keys to open the Run dialog box.
• Next, type “%LOCALAPPDATA%GoogleChromeUser Data” in the field and hit Enter to open the User Data folder.
• From there, rename the default folder and name it something else, e.g. “Default.old”.
• After that, install Google Chrome again and check if the issue is now fixed.

Hello and welcome everyone, just a few years ago we had FLASH video content on the internet, we had FLASH games, full FLASH website experiences, and more, but then flash was shut down mostly due to security reasons meaning that in just a few months we have lost most of FLASH web content. However, there is still FLASH content on the internet even today, there are still FLASH videos and flash games, but we can not play any of that content since browsers do not support FLASH and you can not get the FLASH plugin for browsers. So what might be the solution for this situation?

Ruffle and FLASH emulation

Emulation of course. We will not be able to get the flash player working, well at least not the original and official one, but we can make flash content playable again inside our browsers. The first thing is first, we need to get an emulator package from the internet in order for this trick to work, one we will be using is RUFFLE. It is lightweight, it is free, it is open source and it is reliable, everything we need. Download RUFFLE from its official website here. For Chrome and Edge download the ZIP package, for Firefox, go to the Firefox section of the tutorial. There is also a desktop version of RUFFLE there so if you are keen on playing your flash content on your desktop computer you might well grab that as well, but for the sake of this tutorial where we are enabling flash in our browsers, we will not focus on that part since it is pretty straightforward. Now once you have downloaded the RUFFLE emulator, please extract it to the desired folder somewhere on your computer. Once it is extracted, start your browser of choice and follow instructions.

FOR CHROME:

1. Navigate to: chrome://extensions/
2. Turn ON developer mode in the top right corner
3. Click on Load unpacked
4. Navigate to the folder where you have extracted RUFFLE

FOR EDGE:

1. Navigate to: edge://extensions/
2. Turn ON developer mode on the bottom left corner
3. Navigate to the folder where you have extracted RUFFLE
4. Turn RUFFLE ON

FOR FIREFOX:

1. Go to the RUFFLE download page, we can not use the zip package we were using for Chrome and Edge
2. Right-click on the Firefox download link
3. Save link by clicking on Save link as...
4. Navigate to about: debugging
5. Click on this Firefox
6. Click Load Temporary Add-on
7. Select the .xpi that you have downloaded

BONUS:

If you want to enable FLASH content live on your website use:  <script src="path_to_ruffle/ruffle.js"></script>