Make FLASH content available in your browser

If you have just installed the latest Cumulative Update on your Windows 10 computer and you find that since then, the Windows 10 Start Search is not displaying any results when you try to use it to search for something in your computer, then this post might help as it will give you some suggestions to fix the problem. This problem might be caused by some bugs brought in by the new cumulative update you’ve installed. It is also possible that Cortana is having some issues or that the Windows Search service hasn’t been initialized. Whatever the cause is, here are some suggestions you need to follow to fix this issue. You can try running the Search and Indexing troubleshooter or configure the

1. Run Search and Indexing Troubleshooter
2. Configure the Windows Firewall
3. Reinstall Cortana.

Option 1 – Try to run the Search and Indexing troubleshooter

The first thing you can do is to run the Search and Indexing troubleshooter in Windows 10 as it checks whether the settings for Cortana are in place and automatically corrects any issues if the update or software installation has changed the settings. To run it just click on the Start button and select Settings > Updates and Security > Troubleshoot. From there, select the Search and Indexing Troubleshooter.

Option 2 – Restart Cortana’s process in the Task Manager

Restarting Cortana’s process in the Task Manager could also help you resolve the problem. Refer to the steps given below to do so.

• Tap the Ctrl + Alt + Del keys to open the Security options window.
• From there, look for the Task Manager in the given list and open it.
• Next, look for the process of Cortana and right-click on it, and then select the End Task option to end its process.
• After that, the Cortana process will restart by itself and re-initialize.

Option 3 – Try resetting Cortana

• Open Cortana and go to the Settings section where you’ll see the “Turning off Cortana clears what Cortana knows on this device, but won’t delete anything from the Notebook. After Cortana is off, you can decide what you’d like to do with anything still stored in the cloud” option. Turn this option off.
• Restart your PC.
• After your computer boots, launch Cortana again and check.

Option 4 – Try to configure the Windows Firewall

• Tap the Win + Fn + Shift (Pause) keys to open Control Panel.
• From there, open the Windows Defender Firewall applet and click on the Advanced Settings to open the Windows Firewall with the Advanced Security panel.
• Next, click on the Outbound Rules section and look for Cortana and then double click on it to open its Properties.
• After that, make sure that the “Allow the connection” is selected although this is the default working setting.

Option 5 – Try to reinstall Cortana

If none of the options given above works, you must consider reinstalling Cortana.

• First, right-click on the Taskbar and select the Task Manager.
• Next, select File menu > Run new task and type “Powershell” in the field and then select the “Create this task with administrative privileges” option.
• Click on OK to open the PowerShell console.
• After that, type the following command and hit Enter to execute it:

Get-AppXPackage -Name Microsoft.Windows.Cortana | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)AppXManifest.xml"}

• Restart your computer and check if the Windows Start Search is now working.

DuckGoGo a popular private search engine is releasing its first browser soon that is focused on privacy like its search engine. From the recent blog, Gabriel Weinberg, CEO of DuckDuckGo, has stated:

“Like we’ve done on mobile, DuckDuckGo for desktop will redefine user expectations of everyday online privacy,”

From everything that we have learned so far, the browser will be focused on making privacy super easy and simple, eliminating tons of different settings about privacy, and making the whole environment robust privacy protection all set by default. Settings will be applied in all fields, across search, browsing, email, and more. Gabriel also said that aim of the browser is not just a privacy browser, it is meant to be built and used as your everyday browser, for everyday use that protects your privacy as a bonus. One interesting thing that was stated is that browser itself is built upon OS-provided rendering engines instead of typical Chromium. DuckDuckGo says this approach will strip away a lot of the unnecessary cruft and clutter that's accumulated over the years in major browsers. Also, the company stated that when compared to Chrome, the DuckDuckGo app desktop is cleaner, way more private and that early tests have found out that it is significantly faster as well. Is this just corporate advertising or reality? We will see once the browser is released, or once it is released for public testing. Until then take care and happy holidays.

As you know, each time you log out of your Windows 10 computer, it will take you to the login screen where you can switch users or log back in. But there are instances where Windows 10 remains stuck on the signing out screen, along with a blue spinning circle and all you can see is the process of your computer signing out, however, it does not progress and only gets stuck there. Thus, in this post, you will be guided on how you can resolve such an issue on your Windows 10 computer. So if you are one of the users who experience the same problem, there are several fixes you can check out if your computer is stuck on the signing out screen with a blue spinning circle. You can try to force shutdown your computer or troubleshoot the problem in a Clean Boot State. You could also try to check the status of the User Profile Service or repair User Profile, as well as run System Restore. For more details, refer to each one of the suggestions provided below. But before you troubleshoot the problem, make sure that you are logged in to your computer as an administrator.

Option 1 – Try to force shutdown your computer

The first thing you can do is to force reboot your computer as this simple fix could help in fixing the problem. This option is quite simple, just make sure that before you do it, you have to save all your work.

• First, turn on your computer and press and hold the power button for at least 30 seconds. You might notice the screen flashing or making any changes, just ignore it.
• After that, plug out and plug in your computer and automatically turn it on.
• Once done, check if the issue is now fixed or not.

Option 2 – Put your computer in a Clean Boot State

It is possible that some third-party application is causing your computer to get stuck in the signing out screen. So you can try putting your computer in a Clean Boot State and see if it fixes the problem.

• Log onto your PC as an administrator.
• Type in MSConfig in the Start Search to open the System Configuration utility.
• From there, go to the General tab and click “Selective startup”.
• Clear the “Load Startup items” checkbox and make sure that the “Load System Services” and “Use Original boot configuration” options are checked.
• Next, click the Services tab and select the “Hide All Microsoft Services” checkbox.
• Click Disable all.
• Click on Apply/OK and restart your PC. (This will put your PC into a Clean Boot State. And configure Windows to use the usual startup, just simply undo the changes.)
• Once your computer is in a Clean Boot State, you should now be able to sign out or sign in without any problem.

Option 3 – Try checking the status of the User Profile Service

If forcing your computer to shut down or putting your computer in a Clean Boot State didn’t fix the problem, you can try to check the status of the User Profile Service since it is the one responsible for loading and unloading user profiles. Thus, if this service is disabled or stopped, you will no longer be able to sign out or sign in successfully.

• Tap the Win + R keys to launch the Run utility and type “services.msc” in the field and hit Enter to open the Services Manager.
• From there, look for the User Profile Service and make sure that its Startup Type is set to Automatic and that its status is “Started”.
• Once done, exit the Services Manager and see if the issue is resolved.

Option 4 – Try to repair your corrupted profile via Registry

In this second option, you can try to repair the corrupted profile using the Registry but before you proceed, make sure to create a System Restore Point and then follow the steps below.

• Tap the Win + R keys to open the Run dialog box.
• Then type “regedit” in the field and hit Enter or click OK to open the Registry Editor.
• Next, go to this registry key: ComputerHKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionProfileList
• Once you’ve opened the registry key, you should see a list of all the user profiles on your computer. Now click on each S-1-5 folder and look for the “ProfileImagePath” entry and double click on it to check which user account it is related to. You will see a path like “CUsersACK” where “ACK” is the username.
• You should know which of the user account is corrupted. Just look for a key named “RefCount” and change its Value data to “0” and click OK. And if it isn’t available, simply right-click on the right pane and create it.
• After that, double click on the key named “State” and make sure that the Value data is “0” and click OK.
• Exit the Registry Editor and restart your computer to apply the changes made and then check if it fixed the problem or not.

Option 5 – Run System Restore

• 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.

There are times when the WMI Repository gets corrupted which results in the Provider Load Failure. To resolve this issue, you need to repair or rebuild the WMI Repository in your Windows 10 computer. In this post, you will be guided on how exactly you can do that. In case you don’t know, the WMI which stands for Windows Management Instrumentation is a set of specifications from Microsoft to consolidate the management of devices and applications in a network. The WMI is a database that stores meta-information and definitions for WMI classes. Using only these, the conditions of the systems can be known. You can find the WMI Repository in %windir%System32WbemRepository. It provides end-users with the status of the local or remote computer system. Keep in mind that you must not use this on the Server 2012 Cluster machine. Although there are command-line tools that can fix or restore the Windows Management Instrumentation repository. However, Microsoft suggests that it’s better if you verify if there is corruption. Here are a list of errors as well as permission issues you might encounter:

• Unable to connect to root default or rootcimv2 namespaces. It fails with the error code “0x80041002” pointing to “WBEM_E_NOT_FOUND.”
• 0x80041010 WBEM_E_INVALID_CLASS
• When you open Computer Management and Right Click on Computer Management (Local) and select Properties, you get the following error: “ WMI: Not Found” or it hangs trying to connect
• Trying to use wbemtest , and it hangs
• Schemas/Objects missing
• Strange connection/operation errors (0x8007054e)

To verify if there is corruption, you can try running the following command in an elevated Command Prompt:

winmgmt /verifyrepository

 After you enter the command, if there is a response saying, “repository is not consistent”, then the repository has an issue. If not, then something else is causing the problem. Since you are certain that corruption exists in the WMI repository, then here are some suggestions you need to check out to repair or rebuild the WMI repository.

Option 1 – Try to reset WMI Repository

• Type “command prompt” in the Start Search and right-click on Command Prompt from the search results and then select “Run as administrator”.
• After opening Command Prompt with admin privileges, type and enter this command: winmmgmt /salvagerepository

The command you entered is used when the winmmgmt command performs a consistency check. So if an inconsistency is detected, it will rebuild the repository.

• Next, execute this command to see if the WMI repository now comes back as consistent: winmgmt /verifyrepository

This command will perform a consistency check on the WMI repository.

• If it states that the WMI repository is not consistent, then you need to type and enter this command: winmgmt /resetrepository

This command is used to reset the repository to its initial state when the operating system was first installed.

Option 2 – Try to force recover the WMI Repository

The WMI Repository comes with a built-in self-recovery process so when the WMI service restarts or detects any corruption, it will automatically trigger the self-recovery procedure. This can happen in two ways:

• AutoRestore: This will use the backup images if the Volume Shadow copy or VSS backup is turned on.
• AutoRecovery: The rebuilding process will generate fresh images of the WMI repository based on the registered MOFs. The MOFs are available in the registry located at HKLMSoftwareMicrosoftWBEMCIMOM: Autorecover MOFs

Note: Autorecover MOFs is a key so double click on it to check its value. On the other hand, if the self-recovery procedure does not work, you can try to use the force-recovery process instead. How? Refer to these steps:

• First, you need to check the reg key value is empty or not under this registry path: HKLMSoftwareMicrosoftWBEMCIMOMAutorecover MOFs
• If the reg key value is empty, you have to copy-paste the reg key value from another computer. Just make sure that it’s from the System which is equivalent to the computer in question.
• Next, type and enter this command: Winmgmt /resetrepository
• After you enter the command, if you get an error that says, “WMI repository reset failed. Error code:0x8007041B. Facility: Win32”, then you have to stop all the Dependency Services on the WMI service by running the following commands:
  • net stop winmgmt /y
  • Winmgmt /resetrepository

This should fix the problem.

Code 0xC1900208 0x4000C, What is it?

The Error Code 0xC1900208 – 0x4000C is an error that is caused by an installed application or program on your computer that is not compatible with Microsoft Windows 10. The incompatible application prevents you from being able to complete the upgrade to Microsoft Windows 10 and will continue to do so until the issue is resolved. Common symptoms include:

• You receive a dialog box displaying Error Code 0xC1900208 – 0x4000C
• You are unable to successfully complete the Microsoft Windows 10 upgrade process.

Solution

Error Causes

Error Code 0xC1900208 – 0x4000C is caused by a non-compatible application or program that is currently installed on your computer, and is not allowing the Microsoft Windows 10 upgrade to finish the installation and update process.

• The upgrade is stopped due to an incompatible app or program.
• Out of date or no longer supported software can cause this error to occur.
• Device drivers that are not up to date or no longer compatible.
• The computer might pick up malware along the way and might be preventing the upgrade. If error code 0xC1900208 – 0x4000C is not rectified, you’ll not be able to proceed with your Windows 10 upgrade.

Further Information and Manual Repair

The good news is, error code 0xC1900208 – 0x4000C is a relatively common problem that is usually easily fixed by the user at home, though it can be a little time-consuming. To elude this time-consuming process, use a powerful tool to rectify the issue in no time (TSC). Before making any attempts to repair this error, ensure to perform a compatibility test.

• Check the compatibility of applications and programs installed on your computer to locate and remove, or fix the one that is incompatible. (Don't stop at the first one you find, there could be multiple incompatibility issues.)
• Check to ensure all programs and software are not outdated or no longer supported, and remove or fix any outdated or unused, unnecessary programs or software. (This is also a great way to free up space and clean your computer up a bit.)
• Check to ensure that all of your device drivers are current, up to date, and compatible with Microsoft Windows 10, and replace or update where necessary.

Method 1:

Use the get Microsoft Windows 10 application on your computer to check its compatibility, follow the steps below to run the check.

1. Look at the taskbar, to the right; you will see an icon for Microsoft Windows 10, right-click the icon. Locate the option in the menu to check the status of your upgrade. This will open an app for getting Microsoft Windows 10.
2. Next, you will see 3 lines on top of one another on the upper left side, this will open a drop-down menu, once you have this menu open, locate the option to check the compatibility of your computer.
3. Microsoft Windows will then run a check of your entire computer to check for compatibility with Microsoft Windows 10. Once it has finished its check, a pop-up window will display whether or not your computer will work with Microsoft Windows 10, and will also display a list of any hardware and software that are not compatible with the upgrade.
4. This may not catch everything and there may still be incompatible programs so the previous steps, though time-consuming may still be necessary.

Method 2:

Once the incompatible applications are discovered, use the control panel to remove/uninstall them. The steps are below:

1. Locate your computer’s Control Panel.
2. Choose the option that says “Programs”
3. From the options available, select the ‘Programs and Features’ link.
4. Locate the app in the queue or menu.
5. Right-click and choose the uninstall option.

If you see the following error message in the File History tab of the File Recovery utility of the Windows Backup module in your Windows 10 computer, read on as this post will guide you in fixing it with the help of two potential fixes.

“An internal error has occurred: The specified resource name cannot be found in the image file. (0x90070716).”

You can also encounter this error when you run the System Image Backup function. As mentioned, you can resolve this error using two potential fixes namely checking the status of the Windows Backup Service and checking the settings in the Windows Registry. For more details, refer to the instructions provided below but before you proceed, it would be better if you create a System Restore point first.

Option 1 – Try checking the status of the Windows Backup Service

• First, you need to tap the Win + R keys on your keyboard to open the Run dialog box.
• Next, type “services.msc” in the field and click OK or tap Enter to open the Windows Services Manager.
• After that, you will see a list of services and from there, look for the Windows Backup Service and double click on it to open its Properties.
• Then check if its Startup type is set to Disabled. If it is, then change it to “Manual”. Note that this service is essential as it provides backup and restores capabilities.
• Now click on the Apply and OK buttons to save the changes made and then restart your computer. Check if the error is now gone.

Option 2 – Try checking the Registry setting of Windows Backup

• Tap the Win + R keys to open the Run dialog box.
• Then type “Regedit” in the field and tap Enter to open the Registry Editor.
• After opening the Registry Editor, navigate to this registry key: HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionWindowsBackup
• From there, look for DWORDs named “ValidConfig” and “ValidSystemImageBackup” located in the right-side panel.
• Once you found them, delete them or set both of their values to “0” and make sure that the base is Hexadecimal and click OK.
• Now exit the Registry Editor and restart your computer to apply the changes made.

A lot of controversies and mixed emotions have come from statements about Windows 11 minimum system requirements, especially ones linked to TPM. Naturally, each time some software company giant announces how things are must have there are people who go out and prove them wrong. This time Raspberry Pi community was one which demonstrated that not only Raspberry Pi does not have a TPM module, it can run the full desktop version of Windows 11

Raspberry Pi 4 and things you need for Windows 11 installation

In order to actually install Windows 11 on your Pi, there are certain things that you will need. Check out the below list and prepare everything.

• Raspberry Pi 4 4GB or 8GB
• A 32GB or larger SSD via a USB 3 caddy. Best for performance or 16GB or larger microSD card
• USB boot enabled, see below.
• A micro SD card with the latest Raspberry Pi OS
• Windows 10 PC
• USB to Ethernet or WiFi dongle
• Bluetooth dongle (if you want Bluetooth)
• Keyboard, mouse, HDMI, and power for your Raspberry Pi

Configuring Pi to boot from SSD

In order to boot from SSD be sure that firmware and bootloader are up to date on the latest version and upgrade if needed. Be aware that this firmware update can only be performed using the official Raspberry Pi OS. Also if you are eager and want to use a standard microSSD card instead of an SSD to run Windows 11 feel free to skip this entire section.

1. Boot from microSSD with the latest Raspberry Pi OS on it.
2. Update firmware and OS using the terminal by typing sudo apt update sudo apt full-upgrade sudo rpi-update
3. Reboot your Pi
4. Install the latest version of bootloader again using the terminal with the command sudo rpi-eeprom-update -d – a
5. Reboot Pi
6. Launch raspi-config on your Pi via terminal with sudo raspi-config
7. Select option 3 (Boot options – Configure options for start-up) from boot options
8. Select Boot ROM version and press ENTER
9. Select latest and then OK
10. Select NO when prompted to reset boot ROM to defaults on the latest version boot ROM selected screen. Press OK
11. Select Boot order and press ENTER
12. Select USB Boot and click on OK and remove microSD card from Pi
13. Select Finish and click on NO when prompted to reboot

Creating Windows 11 installation image for Pi 4

In order to install Windows 11 on our Pi, we must create an installation image, follow the steps below explaining the process.

1. Go to https://uupdump.net/
2. Search for Windows 11 Arm
3. Select the latest build for arm64
4. Select Language on which you would like installer and Windows
5. Pick Windows edition you would like
6. Set download method to Download and convert to ISO and click on Create download package
7. Extract downloaded content into win11 folder and go into it
8. Double click on uup_download_windows.cmd
9. On the security warning screen click on More info and then on Run anyway
10. Wait for the process to finish completely
11. Once the process is finished, press 0 to close the prompt

Installing image on microSSD or SSD

If previous steps of instruction were follower precisely you now have an ISO image that can be installed onto microSSD or SSD

1. Connect SSD or insert microSSD card into your PC
2. Go to https://www.worproject.ml/downloads
3. Download Windows on Raspberry imager and extract it into the win11 folder
4. Open Imager and allow it to make changes to your computer, set your language, and click on next
5. Select storage drive where you would like to install Windows
6. Set device type and click on next
7. Select our Windows 11 ISO image we created and click on next
8. On the drivers screen select Use the latest driver package available on the server
9. On UEFI firmware select screen choose Use the latest firmware available on the server
10. On configuration screen click on next
11. Check your setting on the installation overview and if everything is ok click on install
12. Wait for the whole process to be finished
13. Once the process is completed, close Windows on Raspberry imager, take out SSD or microSSD card from PC and connect it on your Pi along with Pi peripherals.

Setting Windows 11 on Pi

In order to actually use Windows 11 on our Raspberry Pi we now have to set up the Windows 11 install using the standard post-installation setup sequence.

1. Power up Pi and press ESC when prompted
2. Go to Device manager and press ENTER
3. Select Raspberry Pi Configuration
4. Select Advanced configuration
5. Set Limit RAM to 3GB to a disabled state, press F10 to save, and ESC to exit.
6. Select Display configuration
7. Set the resolution to desired option and press ENTER, F10 to save, and ESC to exit
8. Go to CPU configuration
9. Check if the CPU clock is set to default, if not set it
10. Press ESC to go back all the way to the main menu
11. Select Continue to exit BIOS and boot your Raspberry Pi with Windows 11 on it

And there you have it, fully working Windows 11 OS on Raspberry Pi despite what Microsoft says Note that due to lack of some drivers performance can be less than optimal, for example, full HD videos will not work since there are no compatible graphic drivers for Pi and some other stuff like Wi-Fi will also cause some issues but overall Windows 11 is working pretty well.

RSAT or Remote Server Administration Tools for Windows 10 is a collection of programs for IT experts. It helps in managing Servers from a Windows 10 PC and starting with the Windows 10 v1809 or the October 2018 update, users have to install the Remote Server Administration Tools for Windows 10 as Features on Demand or as Optional Features. The program includes the Microsoft Management Console or MMC snap-ins, Server Manager, consoles, Windows PowerShell cmdlets, and providers as well as command-line tools for managing roles and features that run on the Windows Server. So if you have updated your Windows 10 pc to v1809 or later then the RSAT tool has to be installed as a set of Features on Demand right from Windows 10. You can install RSAT Tools on Windows 10 Enterprise or Windows 10 Professional and once you install it, make sure that you do not install RSAT tools from the Microsoft Download page directly. Step 1: Open Settings and then go to Apps > Apps & Features. Step 2: Next, click on Manage Optional Features. Step 3: After that, click on Add a Feature which will load all the optional features one can install. Step 4: Now scroll to find the listing of all 18 RSAT tools and depending on what you need, click and install them. Step 5: Then go back to where you should see the progress of the installation. Click on the Manage Optional Features page to check the status. Note: If you are well-versed with the command line or automation, you can also install Remote Server Administration Tools for Windows 10 via DISM /add-capability. And when you install anything via Features on Demand, they stay across Windows 10 version upgrades. On the other hand, if you feel that you don’t need a particular RSAT feature, you have the option to uninstall it using the Manage Option Features. However, bear in mind that some tools depend on one another which means that if you uninstall anything that has a dependency, it will only fail that’s why you need to be careful.

To uninstall an RSAT feature, here’s what you have to do:

Step 1: Go to Settings > Apps > Manage Optional Features. Step 2: After that, look for the list of installed feature that appears before this. Step 3: Now select the feature you want to uninstall and go back. If you have some system-related issues that need to get fixed, there is a one-click solution known as [product-name] you could check out to resolve them. This program is a useful and efficient tool that could repair corrupted registries and optimize your PC’s overall performance. Aside from that, it also cleans out your computer for any junk or corrupted files that help you eliminate any unwanted files from your system. This is basically a solution that’s within your grasp with just a click. It’s easy to use as it is user-friendly. For the complete set of instructions in downloading and using it, refer to the steps below.

The touchscreen feature inside Windows 11 is a pretty good thing but sometimes can be very impractical. The screen can easily and constantly get dirty due to fingers touching it all the time and there are users that do not wish or want to have this feature at all. If you are one of the mentioned users and for any reason, you do not wish to have a touchscreen-enabled then sit back and relax, we have you covered in this tutorial on how to fully disable touchscreen inside Windows 11.

Turn off touchscreen via device manager

1. Click on the Windows Search icon in the taskbar
2. Type Device Manager
3. Click on Device Manager from the list of results
4. Inside locate Human Interface Devices and click on the right arrow
5. In the list, find HID-Compliant Touch Screen and select Disable Device
6. Click on Yes to confirm

Disable it via Windows Terminal

1. Right-click on the Windows icon in the taskbar
2. Click on Windows Terminal (admin)
3. Inside run this command: Get-PnpDevice | Where-Object {$_.FriendlyName -like '*touch screen*'} | Disable-PnpDevice -Confirm:$false

Conclusion

No matter which method you prefer, both of them will disable the touch screen inside Windows 11. Thank you for reading trough article and I hope to see you again. Take care.

What is Mastodon? Mastodon is an open-source microblogging network very similar to Twitter. You can make 500 characters post messages called toot (tweet), share videos or images, and follow other people. But unlike Twitter, Mastodon is decentralized, meaning the entire Mastodon is not run by a single company pulling all strings.

Mastodon can be used directly in your web browser or through a mobile client on a smartphone or tablet. It includes features that seem copied from Twitter-like replies, boosts (retweets), favorites (loves), a timeline view, blocking, and voluntary content warnings that hide sensitive content.

Mastodon also has some great features that Twitter does not have like automated post deletion for the older post of a certain age, requiring approval for follows without restricting your account, and opting out of search engine indexing.

Currently, there are also no ads on Mastodon meaning no ad tracking or ad network surveillance.

How Does Mastodon Work?

Mastodon is a social media network made of nodes called servers or instances each running special software meaning anyone can run their own Mastodon instance (if they have a proper dedicated server). When you have your own instance it can be linked in the federation or remain private, so individuals or companies can have control over individual Mastodon servers.

The software itself is open source based on the social networking protocol ActivityPub which was developed by WWW Consortium.

While using Mastodon, people sign up for accounts with specific instances. Once logged in, you can view a local timeline (of posts from that instance only) or, if the instance is federated with others, see a federated timeline comprised of toots from people in other instances. Mastodon users can send messages to each other using their Mastodon account names that are similar to email addresses in that they feature the server address as well as the user name.