If your browser of choice is Google Chrome then sit back and enjoy the ride as we are going through some great productivity tips for it.
So without further talking let's dive right into them.
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.
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.
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:
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.
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.
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:

If your browser of choice is Google Chrome then sit back and enjoy the ride as we are going through some great productivity tips for it.
So without further talking let's dive right into them.
In today's age of smart gadgets and complete replacement of even some simple things with their smart counterpart, it is not really a surprise to see some strange innovations that try to take advantage of modern technology.

One of these innovations is a smart book, or to be more precise smart note, a reusable notebook that could be connected to your phone.
One thing that could justify, well it should justify buying Rocketbook is the preservation of trees and the environment since it can be reused. The second argument would be its price since it is not expensive considering what it offers.
On top of all, you also have a free application for your phone in order to take full advantage of it.
Imagine this scenario, you have a notebook of 42 pages with several different page styles inside. You write in it and after it is filled you upload its content to your email or cloud service of your choice, get a cloth, erase everything and start again from zero.
So as mentioned notebook comes with 42 pages of various page styles. Most of the pages are either lined or dotted but the notebook also includes a monthly calendar, two-week detailed calendar pages, and three pages for project or idea tracking. Since everything can be erased this is enough variety to cover all basis and eliminate any need for another workbook ever.
When you feel like you want to save work or once it is filled you can easily upload and save the workbook from the scan page option in the free Rocketbook app. Once scanned pages can be uploaded to your preferred cloud service or sent to your email.
Now in order to write and be able to erase any of Rocketbook's notebooks, you will have to use Pilot's Frixion writing pens. They will dry around 15s on the page and can be of course easily wiped with a damp microfiber cloth that is included with the purchase. One pen also comes with a workbook when purchased.
Application has cool features, of course, the most important and most useful one is setting your upload scan destination so when you scan your pages they get automatically uploaded to your chosen destination.
In the application settings, you can also toggle some handwriting recognition features that will allow you to easily search your uploaded documents. For example, you can search through documents just by writing now or two words. There is also a Smart List feature as well that will take your checklist and make it into a virtual checklist.
The app also has a fun Explore section where you can find all sorts of fun hacks and different ideas on how to use your Rocketbook.
Error CausesWindows users affected by error code 0xd0000272 usually receive a message stating that the “activation server is busy or unavailable”. Some users report the error is resolved on its own after a few hours, while others experience activation issues that resolve only after manual repair methods are implemented.
To improve your chances of resolving issues related to Windows activation error codes, use manual repair methods and procedures. These are often successful as they address the issues causing the error codes to occur, whether there be missing or corrupted system files, network connectivity issues, or invalid product keys.
Error code 0xd0000272 may be resolved by simply waiting until later – a few hours at most – to reattempt activation. If, however, the activation process fails, proceed with the methods suggested below or contact a Windows repair technician.
Are network connectivity issues preventing your machine from activating Windows? Check for this issue by verifying whether or not you are connected. Once you’ve been able to check your connection via your Internet settings and troubleshoot your network where necessary, proceed to the Product Activation Wizard.
The Product Activation Wizard will check if you have permission or authorized access to the version of Windows you are attempting to activate. This process usually involves the use of a product key. Once you enter the 25-character code – in the correct order, of course – proceed by selecting the activation option.
If the process is successful, you will be able to complete the activation and access all the features of the Windows edition you have activated. You will also notice the absence of the error code 0xd0000272 message. In cases where this manual repair method is unable to successfully resolve the issue, however, move to the next manual repair procedure on this list.
You can also visit Microsoft’s website to access a more comprehensive Windows Update Troubleshoot tool. Download the troubleshooter and run it to fix problems related to Windows Update. Afterward, restart your computer then check the Product Activation Wizard to verify whether or not you can activate Windows 8 or 8.1. If the problem persists, however, and error code 0xd0000272 reoccurs, proceed to the third manual repair method.
Your computer’s proxy settings may in some cases interfere with the activation process, resulting in issues like error code 0xd0000272. To fix this problem, first, disable your proxy setting then reattempt the activation process using the Product Activation Wizard.
Open the Product Activation Wizard once you’ve disabled the proxy settings. Complete the activation process based on the instructions provided. If you are successful, you will no longer be bothered by error code 0xd0000272 as the symptoms of the error code will not occur.
If, however, this manual repair method fails to resolve the error code, you may need to consider other alternatives. These may include the use of a powerful automated tool. You can also consider getting help from a Windows repair technician as such professionals are able to assess your computer and provide solutions as needed.
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Error Causes“Windows could not start the service on Local Computer. Error 1079: The account specified for this service differs from the account specified for other services running in the same process.”If you got the error message above, then here’s how you can fix it: