Error code 0-2039 (0) occurs when installing or updating the Microsoft Office. The network and firewall restrictions in the network/computer may block the installation and upgrade of the Office 2021/2019 or Microsoft 365 program . This Office 2021/2019 error code 0-2039 (0) also occurs due to the system file errors or corruption. To fix the Error Code 0-2039(0) for office 2021/2019 or Microsoft 365 Disable the firewall or antivirus temporarily or Create an exceptional rule for Microsoft Office installation or update.