Mail and Calendar not working with Cortana? As you know, Cortana was first launched way back in 2014 with an emphasis on its tight integration with both the Windows Mail and Calendar apps. This integration has been one of the highlighting features of this Personal Digital Assistant. However, there are some users who reported that the Calendar and Mail integration with Cortana is not working on their Windows 10 computers. This kind of problem could be due to several factors like the loose integration between the services, incompatible versions of the components, and many more.
According to the users who experienced the issue, the features affected are the syncing of calendar appointments, sending emails via Cortana, and so on. To fix this problem, there are several options you can try. You can try to restart Cortana’s processor run the Windows Store Apps troubleshooter. You could also try to relink your Microsoft account or reinstall the Mail and Calendar apps, as well as reinstall Cortana. For more details, follow the suggestions given below.
Restarting Cortana’s process in the Task Manager could also help you resolve the problem. Refer to the steps given below to do so.
The Windows 10 Store Apps Troubleshooter will help you in fixing the Web Preview problem in Cortana. This is a great built-in tool from Microsoft that helps users fix any app issues. To use the Windows Store Apps Troubleshooter, follow the steps below.
You might also want to relink your account in Microsoft using the Windows 10 Settings app.
If none of the options given above works, you must consider reinstalling Cortana.
Get-AppXPackage -Name Microsoft.Windows.Cortana | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)AppXManifest.xml"}

Error code 0x8007007b will present itself when Windows users are trying to activate Windows. You may try to activate it through the update and security option, but it is likely that you will receive the same error code. Error code 0x8007007b may be presented when Windows 7 and Windows 8.1 users try to upgrade and activate Windows 10 on their computer.
Common symptoms include:
Error CausesThere are multiple causes for the user to see this error code, including if a user is using volume-licensed media while installing a number of various Windows operating systems. This error may also be caused because the activation wizard cannot connect to a KMS host computer. It is likely that if the user has a volume-licensed form of media, they were likely given a MAK (multiple activation keys).
There are several ways to go about repairing error code 0x8007007b. It is important to try all of the methods, but if it is too difficult or you do not know what you are doing, please do contact a Windows repair technician. They will likely be able to fix the problem with ease.
When KMS activation is not used, and when there is not a KMS server, the product key type should then be changed to a MAK. For MSDN (Microsoft Developer Network) or TechNet, the SKUs that are listed on the media are generally volume-licensed media, and that means that the product key that is supplied is a Multiple Activation Key.
To change the KMS to a MAK, click Start, All Programs, Accessories, and then right-click on Command Prompt. Click Run as Administrator. If prompted for a password or confirmation, enter it now.
When the command prompt opens, type in the following command, and press enter after:
slmgr -ipk xxxxx-xxxxx-xxxxx-xxxxx (these x's are representative of the MAK product key).
While on the desktop, press the Windows key and R. The Run window should appear, and then you should enter the following command: Slui 3. Press Enter and then wait for the window to appear. This window will ask for the operating system activation product key. Enter the product key and then press the Activate button. Reboot the computer. Now the Error Code 0x8007007b should be gone.
Open the Command Prompt with access as administrator as mentioned previously. Enter the following command: sfc /scannow. The command will then complete its task. This will take a good bit of time, so leave the computer to do its work. The sfc must finish the scan. When the scan has finished, reboot the computer. Now you can check for activation. The error code should be gone.
This method for correction should be used when the network does have a KMS host computer setup, and the client is not able to locate the KMS host on the network to complete activation.
To verify that the computer does in fact have the KMS host installed. Click Start, All Programs, Accessories, and then right-click on Command Prompt. Run as administrator. If you are now prompted to enter a password or confirmation, do so. When the command prompt box comes up, type in the following command, and then press Enter: nxlookup -type=all_vlmcs._tcp>kms.txt
The command will generate a file, open this KMS file. The file will contain one or more entries. As a default, the KMS host server will dynamically register a DNS SRV server evidence once every 24 hours. In order to check the registry to ensure that this is happening, follow these steps:
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.
You can prevent starting of app installations files if they have not come from the MS store inside Windows 11.
This can make your PC more secure because all apps in the store will have to be digitally signed and overall it can provide you with more control over what will be installed.
Follow the guide below to find out how can you easily turn this feature ON.
chkdsk /f /r
dism.exe /image:C: /cleanup-image /revertpendingactionsAfter you execute the command, restart your computer and try to run System File Checker again and see if it has fixed the problem or not.