Thorconnwndclass error is an Outlook error that has recently reared its head.
Known to create several problems in the proper functioning of the Outlook application, this error is essentially a constituent of the Norton Antivirus Crash Guard Symantec component. That’s why those using the Norton Antivirus program are most likely to encounter this error.
Error CausesWhen the Thorconnwndclass error occurs, the Outlook closes unexpectedly, users encounter problems while sending or receiving emails and, performance of Outlook is degraded and this happens because issues arise while accessing the PST file. Because of this damaged PST file, stored data is unavailable for access.
Other factors that trigger the Thorconnwndclass error are listed below.
Regardless of the underlying factors that lead up to the occurrence of this error, it's of paramount importance that workarounds are implemented to ensure desired performance of Outlook in the long run.
While there are several ways to rectify this error, some of the most common ones are listed below as follows.
Some other tips for manually resolving this problem are listed below as follows.

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.
"Cannot find the file sqlite3.dll (or one of its components)"
Followed by:
"Error starting program.. A required .DLL file sqlite3.dll was not found."
Error Causes
It is not a secret that Windows 11 is the most secure Windows ever created, well at least up until now. It is packed with advanced security features like S-mode, Secure Boot, and Trusted Platform Module (TMP 2.0). All these new security features that Microsoft has advertised made people question are enough for security or do you still need third-party Antivirus software.
In order to get an answer to this question, let us first take a detailed look at what each one of them does, and then we will give you our opinion on a given subject.
Once it opens, click on Device Manager to open it,
If you have a driver device error inside Windows, you should see it immediately when entering the Device Manager, it will have a yellow exclamation mark beside it. Right-click on it and choose update driver.
Task View feature inside Windows 11 is actually a great feature, letting you quickly view open windows and virtual desktops. How Task view itself could be reached with keyboard shortcut combination of ⊞ WINDOWS + TAB some users will prefer this way of using it and thus button on the taskbar is something you do not want or need.
There is a very easy way to remove mentioned button and I will show you how to do it.
Right-click the taskbar button itself and click on Hide From Taskbar.
That’s it, you have done it.
Now in order for you to bring it back if you change your mind, you will have to do some extra steps but it is nothing difficult.
Right-click on the taskbar and click on Taskbar settings, you will be lead to Personalization > Taskbar.
Inside locate Taskbar Items and switch Task View to ON, you will see the Task View button right away showing itself again. Error code 0xC1900101, 0x20017 in Windows 10 occurs when Windows users attempt to upgrade to Windows 10 but fail to complete the installation process. This Windows error code may occur due to issues with a third-party antivirus program or problems related to a driver or hardware. When this occurs users will receive an error message and their machine will automatically revert to the original operating system on the device. Common symptoms of the error code include the following:
Error CausesTo fix this particular error code affecting Windows 10 devices, you will need to employ at least one manual repair method mentioned within this article. Manual repair methods offer effective solutions as they seek to address the root causes related to Windows error codes. When the manual repair methods are implemented correctly, users are usually able to quickly overcome issues that cause Windows error codes and can thereafter access all the benefits Windows has to offer to its users.
Note, however, that in a few cases where technical skills are required, the need for a Windows repair technician may present itself. In such a case, resort to Windows forums and other resources to access help from a certified Windows professional. Also, consider using an automated tool where necessary.
Some third-party security programs or antivirus software may interfere with the installation process when Windows users attempt to upgrade to Windows 10. To verify if this is the issue causing error code 0xC1900101-0x20017 on your device, temporarily uninstall or disable these applications. You may easily do so by checking the settings of these programs or visiting Settings within the Windows Start Menu.
Once you have disabled these programs on your device, reboot your machine and attempt to update to Windows 10. If the issue was caused by a third-party app, error code 0xC1900101-0x20017 will no longer occur and your machine will successfully upgrade to the version of Windows 10 you attempt to download.
However, in the case where error code 0xC1900101-0x20017 in Windows 10 reoccurs during the installation process, you will need to resort to another manual repair method listed below.
Like method one, this manual repair method can be effective in combating issues related to 0xC1900101-0x20017. This is of course, dependent on whether or not the error code is due to an incompatible security program.
Temporarily disable your firewall by adjusting its settings. Once this step is complete, reboot your machine and attempt to install the latest version of Windows 10. If you are able to complete the process, this means the problem was due to an issue with your firewall. You can then enable the firewall you previously disabled or download another program as its replacement.
If the error code reoccurs, however, consider implementing the next manual repair method on this list.
Command Prompt can be very effective in helping regular as well as technically skilled users repair issues with their PC. In the case of error code 0xC1900101-0x20017 in Windows 10, access Command Prompt using the following instructions.
Be sure to enter the command as it is written above, with a space between “sfc” and “/scannow”. Wait until the scan is complete. If there are any errors related to system files, i.e. if any system files are damaged, corrupted, or missing, your machine will begin to fix it. Once the process is complete, reboot your PC then reattempt the Windows 10 upgrade process via Windows Update. If you are successful, it means that you have rectified error code 0xC1900101-0x20017. Otherwise, you may need to contact a Windows repair technician.
If you wish to always have at your disposal a utility tool to fix these Windows 10 and other related issues when they do arise, download and install a powerful automated tool.