With this said, if you have extra time on your hands during the holidays and decide to clean up your Windows installation, do not remove any expired certificates from the Trusted Root Certification Authority as it could cause issues in the operating system. Windows 10 Home is the perfect operating system for personal and household use, while Windows 10 Pro offers all the familiar features of Windows 10 Home, plus additional features such as BitLocker, remote desktop, and domain join to support professionals. As long as expired certificates are not revoked, they can be used to validate anything that was signed before their expiration,' Microsoft warns not to delete expired certificates. Even if there is an expired trusted root certificate, anything that was signed by using that certificate before the expiration date requires that the trusted root certificate is validated. However, these certificates are necessary for backward compatibility. Select the Start button, then select Settings > Update & Security > Activation > Change Product Key, then enter the product key. 'Some certificates that are listed in the previous tables have expired. If Windows 11 wasn't pre-installed on your device when purchased and you used a product key to upgrade to Windows 11, then you'll need that same product key after the hardware change. Microsoft also warns that expired certificates are still used by Windows for backward compatibility and should never be removed. Click the gear icon (settings) at the top right near your icon. For Microsoft Office: Login to your UofT email.

To install Windows onto a fresh computer, you will need to use the 'Media Creation Tool' found on Microsofts website and a 8+Gb USB. Because removal of the following certificates may limit functionality of the operating system or may cause the computer to fail, you should not remove them, ' Microsoft explains on the support page. For Windows 10: Register an account here and follow the instructions to get a Windows 10 Key. 'However, the root certificates that are listed in the Necessary and trusted root certificates section in this article are required for the operating system to operate correctly. In this article, Microsoft explains that trusted root certificates should never be deleted as they could affect the proper operation of Windows or cause the computer to fail. When we contacted Microsoft regarding the expiring root certificate, we were referred to a support page that lists the trusted root certificates required by Windows. While other newer Microsoft root certificates are not expiring this year, some users are concerned that the expiring certificate could prevent software, hardware, or the operating system from performing correctly. Expiring Microsoft Root Authority certificate

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