Error code 30015-11 occurs during Microsoft Office installation or update, typically stalling between 90% and 97% and displaying "Something went wrong."
This error usually indicates corrupted installation files or an incompatible Windows version.
Running the Windows Update Assistant can resolve the issue by updating the system to the latest build and replacing corrupted or missing files.
Updating your system to the latest build can help resolve the error.
Author's summary: Fix Error 30015-11 by updating Windows.