When upgrading to Windows 11 on older hardware, users may encounter frustrating error codes and messages. To resolve upgrade issues, it is recommended to:
1. Ensure all necessary driver and firmware/BIOS updates are installed, as many users have found success after addressing these updates.
2. Check Microsoft's Windows release information dashboard for known issues related to the upgrade, as there may be temporary compatibility blocks that can be bypassed by updating or uninstalling incompatible software.
3. Restart the upgrade process after checking for pending updates, uninstalling unnecessary software, and disconnecting non-essential peripherals. Selecting "Not right now" for update downloads can help minimize complications.
4. Search for specific error codes and messages online, using reliable sources like Reddit or Microsoft for potential solutions.
5. Utilize the SetupDiag tool to analyze Windows log files for detailed reports on upgrade failures, which can help identify the causes of issues. This involves downloading the tool, creating a specific folder, and running commands in an elevated command prompt to generate a readable report.