Although you can technically continue to use version 2004 since Microsoft no longer offers support for this release, computers running this version will stop receiving security and quality updates, and you can no longer contact the company for support. If you have a device still using the May 2020 Update, the system will soon upgrade automatically to the next supported version, which in this case will be version 20H2 (October 2020 Update). However, you can always upgrade manually to the latest version, which at the time of this writing is version 21H2. To upgrade manually, you should be able to complete the task from Settings > Update & Security > Windows Update, click the Check for updates button, and then click the Download and install option for the newer version available on your device.  Once the feature update is applied to the device, you will need to restart to complete the installation. The process should not take a long time, since version 20H2 and higher releases are small updates with only a few minor improvements and features, and the installation does not require full reinstallation. If you want to upgrade to the most recent version manually, you can use the Media Creation Tool or Update Assistant. All content on this site is provided with no warranties, express or implied. Use any information at your own risk. Always backup of your device and files before making any changes. Privacy policy info.