Fix Windows Update Error 0x80070652

The “Unknown Hard” error that keeps on appearing in Windows 10 can put users in an unpleasant situation. This kind of error leads to the freezing of the taskbar, blackening of the screen, and sudden disappearance of the icons on the Desktop. And each time you try to open Windows, the system will only give you an error message saying that it’s a critical error and some applications like Start and Cortana won’t work. Upon analysis, it seems that the “sihost.exe” is not responding and that it is the one that’s causing the c000021a Unknown Hard error to pop up. Sihost.exe files represent the Shell Infrastructure Host which is an essential component in the Windows operating system. The Windows Shell Infrastructure Host is primarily responsible for handling some graphical elements of the operating system interface such as the Start menu and the taskbar transparency. And so if the Shell Infrastructure or Sihost.exe has stopped, has been removed, or corrupted, you will most likely have issues with the overall functionality of the Windows operating system and you’ll get the Unknown Hard error In addition, the ctfmom.exe Unknown Hard error may also occur due to incompatible drivers installed on your PC. Ctfmom is a process that identifies inputs such as handwriting, languages, and many more. It’s the one that controls the functions of background behavior. To resolve this issue, you need to first try to identify which application is the one that’s running the sihost.exe file. And if needed, you need to either update or reinstall or completely uninstall the problematic application.

Option 1 – Try to run the System File Checker

The SFC Scan or System File Checker, us a built-in utility in Microsoft Windows that can be found in the C:\Windows\System32 folder. This tool allows users to scan and restore any corrupted system files in Windows that might be causing the Unknown Hard error to appear. Before you use this tool, make sure to find out whether the sihost.exe on your computer is a Trojan that you have to remove or if it’s a file that belongs to a trusted Windows application. Once you have that sorted out, follow the steps 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.

Option 2 – Try to use System Restore

You can also try using System Restore. This is one of the ways you can use it to back up your PC. Since restore points are created automatically each week by System Restore, you can use System Restore to restore your computer back to an earlier good point in time.

Option 3 – Try to troubleshoot the error in a Clean Boot State

Putting your PC in a Clean Boot state can help you diagnose and troubleshoot the issues in your system. During this state, you can start the system with a minimum number of drivers and startup programs that will surely help you in isolating the root cause of the Unknown Hard Error.

• 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.)

After putting your PC in a Clean Boot State, try creating a system restore point and see if the problem still occurs. Clean Boot troubleshooting is designed to help you isolate the problem. For you to execute a clean boot troubleshooting, you must do a couple of actions (the steps are given above) and then restart your PC after every action. You might have to disable one third-party app after the other to really isolate the issue. And once you’ve narrowed down the problem, you can either disable the third-party app that’s causing the problem or remove it. Note that you must switch your PC back into the Normal Startup mode after you’re done troubleshooting the problem. Here’s how you can do it:

• From the “Start” menu, go to System Configuration.
• After that, switch to the General tab and click the option for “Normal Startup”.
• Next, go to the Services tab and clear the checkbox for “Hide all Microsoft services”.
• Then find and click “Enable all” and if prompted, you have to confirm.
• Afterward, go to the Task Manager and enable all the Startup programs and confirm the action.
• Restart your PC when prompted.

Something we are used to doing in a certain way inside Windows 10 is slightly changed in Windows 11. One of those things is how you open task manager, well kind of. Option to right-click on the taskbar and launch task manager is gone but do not worry there are other same and simple ways you can launch it.

1. Press CTRL + SHIFT + ESC or CTRL + ALT + DEL
2. Right-click on the START button
3. Type task manager in start search on top in the start menu
4. Type taskmgr in command prompt
5. Press ⊞ WINDOWS + R to open run dialog and type in taskmgr

And that’s it, now depending on your situation, you might use different methods to evoke task manager.

During Windows 10 installation, you will see all the beautiful user interfaces, however, what’s more, important are the drivers, your processor, and free storage disk in order for the installation to be successfully completed. So if you are getting the CompareExchange128 error during the installation of Windows 10, this means that the CPU lacks a very important instruction known as “CMPXCHG16B”. Thus, if you don’t have CMPXCHG16B, then it will result in the CompareExchange128 error when you install Windows 10. In fact, CMPXCHG16B, PrefetchW as well as LAHF/SAHF is a criterion for you to be able to use Windows 10 64-bit version when upgrading from an earlier version of Windows. So what exactly is the CMPXCHG16B instruction? The CMPXCHG16B instruction is the one that performs an atomic compare-and-exchange on 16-byte values. This instruction can also be referred to as “CompareExchange128”. The atomic compare-and-exchange means that the CPU compares the contents of a memory location with a given value. So if the values are the same, it modifies the contents of that memory location to a new given value. Note that this kind of issue only happens to the 64-bit Windows 10 version and the only way to resolve it is by getting an update on the hardware level from the OEM. On the other hand, if nothing really works, it’s maybe time for you to get a new CPU but before you resort to that, in the meantime, you can try following the options given below to fix the CompareExchange128 error during the installation of Windows 10.

Option 1 – Try to update the BIOS and Chipset Drivers

One of the best things you can do to fix the CompareExchange128 error is by updating the BIOS and chipset drivers which is why you need to check if your OEM has an update available for your computer’s BIOS as well as the related chipset drivers. But before that, you need to first check the BIOS version. To do so, follow these steps:

• Type “msinfo32” in the search bar and hit Enter to open the System Information Tools.
• After opening the System Information Tools, check the BIOS version.
• Then take note of that BIOS version. You also need to use the BIOS utility that came with your computer and use it for the upgrade. Note that it is different for every computer and if you don’t have it, you can just go to the OEM website and see if there is an option to download it there.

Option 2 – Try to downgrade to the 32-bit Windows 10 version

If option 1 didn’t work as the BIOS update is not available, you can also try downgrading to the 32-bit version of Windows 10. Keep in mind that this will bring restrictions on the amount of RAM installed and other places but that won’t be a problem as you can still switch.

Option 3 – Try buying a new hardware

If none of the first two options didn’t work for some reason then maybe it’s time for you to purchase new hardware especially if your computer is way too old. In such cases, it’s better to buy new hardware or better yet, a new computer that can keep up for the next couple of years.

As you know, one of the most highlighted features of Windows 10 is Windows Updates. It was offered to the customers as a service rather than a product with the release of Windows 10 under the scenario of Software as a Service which led to Windows Updates being set by default on Windows 10 and without an option for any users to disable it. Although not all users are happy with what Microsoft did, this is an ultimate step towards the greater good of all its customers since Windows Updates helps users in keeping their computers secured against all kinds of threats as well as provide them with the greatest and latest updates from Microsoft. So if you are one of those users who approved of the Windows Updates service, then read on as this post will guide you in running Windows Updates from Command Line either via Command Prompt or Windows PowerShell. For the complete set of instructions, refer to the options given below.

Option 1 – Run Windows Update via Command Prompt

Command Prompt in the Windows operating system exists for a very long time now compared to the comparatively new Windows PowerShell. That’s why it has similar capabilities to run Windows Updates. However, the highlighting point here is that you don’t have to download any module for Windows Updates. To get started running Windows Updates using Command Prompt, refer to the steps below.

• First, type “cmd” in the Cortana search box, and from the search results, right-click on Command Prompt and select the Run as Administrator option to open it with Administrator privileges.
• If a User Account or UAC prompt appears, just click on Yes to proceed.
• Next, type in the commands listed below, and don’t forget to tap Enter right after you type each one of them.
  • UsoClient StartScan – use this command to start checking for updates.
  • UsoClient StartDownload – use this command to start downloading updates.
  • UsoClient StartInstall – use this command to start installing the downloaded updates.
  • UsoClient RestartDevice – use this command to restart your computer after you install.
  • UsoClient ScanInstallWait – use this command to check, download and install updates.

Note: Keep in mind that the commands in Command Prompt listed above are only meant for Windows 10. On the other hand, if you are using an older Windows version, you can try using the following commands instead:

• wuauclt /detectnow – use this command to start checking for updates.
• wuauclt /updatenow – use this command to start installing the updates detected.
• wuauclt /detectnow /updatenow – use this command to check, download and install updates.

Option 2 – Run Windows Updates via Windows PowerShell

If you run Windows Updates in the Windows PowerShell, it will require you to install the Windows Update module manually. Hence, you have to get the Windows Updates downloaded and install Windows Updates.

• Search for PowerShell in the Cortana search box and then run it with administrator privileges.
• Once you’ve opened the Windows PowerShell, type the following command and hit Enter.
  • Install-Module PSWindowsUpdate – use this command to install the Windows Update module for Windows PowerShell.
  • Get-WindowsUpdate – use this command to connect to the servers of Windows Update and download the updates if found.
  • Install-WindowsUpdate – use this command to install the Windows Updates you’ve downloaded to your computer.

In case you didn’t know, the new Windows 10 v1903 has brought tons of new features around Windows 10 Updates. One of these features is the ability to automatically adjust the Active Hours based on your computer activity. This feature is really useful as it tells the operating system when to install the Windows Updates. A lot of users use the Active Hours feature to ensure that the Windows Update won’t force them to restart their PCs to install the update. So if your computer is turned on, it won’t apply the update during the active hours you’ve specified. In addition, the active hours change for many users and they are not that strict. For instance, if you set the active hours between 10 am to 5 pm, Windows Update won’t be forcing you to restart your computer to install the updates at those times. Note that Windows Update allows enabling an option using where it can monitor the active hours in your computer and change it. To configure this setting, here’s what you have to do:

• Frist, go to Settings > Update & security > Windows Update.
• Next, take note of your current active hours and click on the “Change active hours” link.
• Then toggle the option that says, “Automatically adjust active hours for this device based on activity”. This will change the active hours and if you match it with the previous one, it should be different.

As you can see on the image given above, the earlier active hours were between 8:00 to 17:00 and were changed to 11:00 to 19:00. If you have been using this feature for a while you’ll find how useful and handy it is especially when you’re using your computer and don’t want any notifications like the prompts for Windows Updates to bother you while working.

This post will guide you in what to do if you are trying to share the internet connection from your Android smartphone to your Windows 10 computer but USB tethering is not working. Although you can always connect your Android phone to your computer using a USB cable, you still won’t be able to access the internet. However, if you’ve already enabled the USB tethering option in your smartphone, you should be able to access the internet but if you still can’t then you can fix this issue by reading this post. There are several potential fixes you can check out to fix the USB tethering issue. You can try running both the Internet Connections and Network Adapter troubleshooters or try installing the USB RNDIS adapter or disable any unnecessary network adapters.

Option 1 – Try to run the Internet Connections and Network Adapter troubleshooter

There are various built-in troubleshooters in Windows 10 that can help fix system issues. Since you are dealing with an internet connection problem, you can try running both the Internet Connections and the Network Adapter troubleshooters. To run them, follow these steps:

• Go to Settings > Update & security > Troubleshoot.
• From there, you can select the Internet Connections troubleshooter.
• Click on the Run troubleshooter button to troubleshoot the problem.
• Wait until the troubleshooter is done identifying and fixing the problem automatically.
• Then follow the next on-screen instructions that may appear.
• Once it’s done, check if the USB tethering issue is now fixed.

Note: You can also try to run the Network Adapter troubleshooter. It is also located under the Troubleshoot section. Just scroll down until you see it and then run it.

Option 2 – Try installing or updating the USB RNDIS adapter

RNDIS or Remote Network Driver Interface Specification can also help you resolve the USB tethering problem. If the pre-installed driver does not help you in connecting to the internet, then you can try installing the USB RNDIS driver that is, if it’s not installed yet. If it is already installed, you can try to update it instead.

• Tap the Win + R keys to open Run and type “devmgmt.msc” in the field and hit Enter to open the Device Manager.
• Next, expand the Network adapters section and look for the Remote NDIS based Internet Sharing Device. But if you are using a Samsung smartphone, you might see “Samsung” instead of under Network adapters.
• Right-click on it and then select the “Update driver” option.
• Then select the “Browse my computer for driver software” option.
• After that, select the “Let me pick from a list of available drivers on my computer” option.
• Now uncheck the checkbox for “Show compatible hardware”.
• From the given list on your left-hand side, look for Microsoft and then select the Remote NDIS based Internet Sharing Device on your right-hand side.
• Click on Next. A new popup will appear where you have to click on Yes. This will install the driver.
• Now click on the Close button and restart your computer.

Option 3 – Try disabling any unnecessary network adapters/connections

Assuming that your Ethernet connection is showing ping loss which indicates that the internet is not stable. In such time, if you use the USB tethering functionality, you won’t be able to access the internet connection from your smartphone. The internet connection will be frequently disconnected since your computer gives priority to the Ethernet connection. Thus, you have to disable the Ethernet connection temporarily.

• Right-click the network icon on your Taskbar and select the option “Network and Sharing Center”.
• After that, click the network connection. And then click the Disable button from the status box that opens.
• After that, check if you can now connect to the internet or not.

Windows 7 was an operating system that had one thing which no other Windows had, even today. Official Microsoft desktop widgets. With an attractive design, users loved to exploit the adequacy and neatness of these gadgets. However, Microsoft had to discontinue these gadgets as they posed a serious security threat to the Operating System. It was believed that a potential attacker could even use a gadget to take complete control of your PC. With Windows 10, things have changed big time. You have all the fantastic apps and live tiles at your disposal providing a more native experience. Despite all this, if you still have a fondness for fancy gadgets, we have just the right tool for you to get started with similar “Widgets” on Windows 10. Win10 Widgets is a tool that places the most important information right in front of you, on your desktop.

Win10 Widgets

Win10 Widgets is a desktop app package provided by Rainmeter which is an effective system customization engine for Windows. It brings some informative widgets to Windows 10 which look almost native with their intuitive and sleek design. You can pin them on your desktop to keep an eye on various system figures like CPU usage, data storage, battery usage, detailed computer performance, etc.

Native looking Widgets for Windows 10

These widgets are designed in such a way that it looks totally indigenous to the Windows 10 UI. With a similar design language, visual style, accent color, and even font settings, these widgets almost look like an inseparable system component. You can choose between different size variants to pin on your desktop and arrange them in an orderly fashion to make the most of it.

Highly customizable desktop gadgets

Apart from the default size variants, you can configure several other parameters pertaining to the look and appearance of any widget. As Rainmeter is an open-source program, you are provided with the .ini configuration files which you can customize as per your wish. You can make adjustments to the widget coordinates, position and transparency as well. You can even create your own skins (.rmskin package) using the built-in Skin Packager and publish them for general usage through Rainmeter.

Illustro Skins

Over and above the cool widgets, Rainmeter also contains Illustro, a simple collection of skins that shows the range of Rainmeter’s capabilities. You can load the skins on your desktop for a brief look at your system internals. You can also start editing these skins to make them yours by taking advantage of the Rainmeter manual and forum link provided on the Welcome screen. Win10 Widgets is a great tool if you like widgets or gadgets on your Desktop. It blends into the background and puts the important piece of information right on your desktop without you having to look somewhere else. If you already have the Rainmeter application, you can download the Win10 Widgets .rmskin file from here, else you can download the combined bundle for both Rainmeter and Win10 Widgets from here.

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 is various Blue Screen of Death errors that you can encounter as you use your Windows 10 computer and some of these Stop errors have something to do with the win32kbase.sys file. This post will guide you in fixing the BSOD errors related to the win32kbase.sys file.

• A problem has been detected and Windows has been shut down to prevent damage to your computer. The problem seems to be caused by the following file: Win32kbase.sys.
• Your PC ran into a problem and needs to restart. If you would like to know more, you can search online later for this error: win32kbase.sys.
• SYSTEM_SERVICE_EXCEPTION (win32kbase.sys)
• STOP 0x0000000A: IRQL_NOT_LESS_EQUAL – win32kbase.sys
• STOP 0x0000001E:

KMODE_EXCEPTION_NOT_HANDLED – win32kbase.sys

• STOP 0×00000050:

PAGE_FAULT_IN_NONPAGED_AREA – win32kbase.sys

The win32kbase.sys file is a Windows operating system Base Win32 Kernel Driver file located in the System32 folder so if it ends up getting corrupted or if it went missing, your computer will throw up Blue Screen error. To fix BSOD errors that have something to do with the win32kbase.sys file, here are some possible fixes that could help. Worry not for these possible fixes are not complicated.

Option 1 – Run the Check Disk or CHDSK utility

One of the first things you can try to resolve the win32kbase.sys Blue Screen error is running the CHKDSK utility. 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 C:

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

Option 2 – Run SFC or 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 to 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 PC.

Option 3 – Try to run the DISM commands

You might want to repair potentially corrupted files in your system as having them could also trigger the win32kbase.sys Blue Screen error. To repair these corrupted system files, you can run the DISM commands:

• Tap the Win + X keys and click on the “Command Prompt (Admin)” option.
• After that, input each one of the commands listed below sequentially to execute them:
  • Dism /Online /Cleanup-Image /CheckHealth
  • Dism /Online /Cleanup-Image /ScanHealth
  • Dism /Online /Cleanup-Image /RestoreHealth

• Once you’ve executed the commands given above, restart your computer and check if the dxgkrnl.sys Blue Screen error is now fixed.

Option 4 – Try to run the Blue Screen Troubleshooter

As you know, the Blue Screen troubleshooter is a built-in tool in Windows 10 that helps users in fixing Blue Screen errors related to the win32kbase.sys file. It can be found in 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.

Without any fanfare, news, or information Bethesda has released a completely free upgrade for legendary Quake 1. Free upgrade is automatically applied to all users who possess the original game and it has already been rolled out.

What has changed for good?

New textures, effects, and resolutions are one thing that will come first into your focus when you start the game. From the moment game is started it feels and looks like a game you remember from a long time ago. Models are also upgraded with a higher polygon count. Another thing that will hit you right away is the legendary OST by Trent Reznor in its full glory. If you have the original Quake and played it you will know that OST was missing from the Steam release and having it fully back is a great feature. I would argue that placing just OST alone in the steam release is enough for people to play it again since it adds so much atmosphere. Deathmatch and other multiplayer goodies are all here as well and there is a completely free new episode in the game with several levels. Yes, you get a free Quake upgrade in HD with an extra episode completely free.

The bad side of Quake coin

So this might come as a purist or obsessive nit-picking but there were two things that I, personally am not a fan of and have noticed during my gameplay. Please know that this is personal preference and by no other chance reflects the quality of the game itself but I just had to talk about it. Quake remake is made in a new engine and as such dynamic and gunplay feel different from the original, granted they have done the best they could to replicate the authentic feeling of the original game but there are parts of the game where I have felt that simply put, it feels different. Another thing is also tied to technology and the overall game is somewhat a little brighter and in some areas little softer in dark areas. Like I said this is purely personal preference and might come as nitpicking but I preferred the darker and grittier look of the original game. Darkplaces, the free custom-made upgrade did this in my opinion better.