Error Code 30015-26 (1006) is typically associated with Microsoft 365, Office 2019, 2021, or Office 365 versions. It occurs when there is a problem with the installation or update process, preventing the successful completion of the operation. The Office Error Code 30015-26 (1006) message may vary slightly, but it generally indicates that Office 2021/2019 cannot be installed or updated due to certain underlying issues https://livehelpbook.com/microsoft-office-error-code-30015-26-1006/