Microsoft Office Installation Error code 30068-15 (1715)
In some cases, microsoft 365 installation may stop because of several reasons like slow internet, server issues etc. Then your machine creates some of files required to office 365/2021/2019 product.
When you try to re-install this time, You may see issues like these type of error code 30068-15 (1715) and 30068-28(1715) different series based on the reason of failure.