Source:
https://www.fixitkb.com/microsoft/office/error-code-30088-29-or-30088-4-123-when-installing-office/
Category:
Blogs
Error code 30088-29 or 30088-4 (123) occurs when other Office installation is conflicting, secuity software, firewall, proxy settings, connection or third party software prevent us from installing Office.




