I was getting this message to “Uninstall office15 click-to-run extensibility Component”
Open “Regedit” and navigate to HKEY_CLASSES_ROOT\Installer\Products\ path.
Next delete the following two registry entries.
HKEY_CLASSES_ROOT\Installer\Products\00005102C80000000000000000F01FEC
HKEY_CLASSES_ROOT\Installer\Products\00005105F80000000100000000F01FEC
Navigate to C:\program files\Microsoft Office\directory. If you see the Office15 Folder here remove it.
You need to update the web.config file to allow larger content to be sent. Here is an example of 300 MB.
<configuration>
<system.web>
<httpRuntime maxRequestLength="307200" />
</system.web>
<system.webServer>
<security>
<requestFiltering>
<requestLimits maxAllowedContentLength="314572800" />
</requestFiltering>
</security>
</system.webServer>
</configuration>
Until I can determine the resolution, have the user try IE InPrivate browsing mode.