Office 2021 may show error code 0‑2048‑0 during installation or activation when its licensing service fails—often due to corrupted license files, permission issues, incomplete install remnants, or network interruptions. This error disrupts setup and prevents you from using Office. To resolve it, restart your PC to clear temporary files and processes, then run the Office installer or activation tool as an administrator to bypass permission restrictions. If that doesn’t help, completely uninstall any existing Office versions using the Microsoft Support and Recovery Assistant, and delete leftover folders in
%ProgramFiles%Microsoft Office, %ProgramFiles(x86)%Microsoft Office, and %localappdata%MicrosoftOffice. Next, temporarily disable any antivirus or firewall software that could interfere during reinstall. After that, open an elevated Command Prompt and run sfc /scannow to repair system file corruption. Reboot your system, then rerun the Office setup or activation process. These steps usually resolve error 0‑2048‑0. For a full, detailed walkthrough—including recovery tools and extra tips—refer to this comprehensive guide.