Hi I have taken a sample github project https://github.com/OfficeDev/Excel-Add-in-JS-QuarterlySalesReport/blob/master/Readme.md , and after making a few changes in manifest was able to successfully import the add in in my desktop excel app Version 1611 Build 7571.2006 ( the add-in web app was running on my local box itself)
Now i am trying to upload this add on online excel, while my web app runs on my local box but I am getting this error on online excel
Here is the manifest i upload to online excel (this manifest file is same as the manifest which works on excel desktop except that i replaced the ip address from 127.0.0.1 to my public ip )
<?xml version="1.0" encoding="UTF-8"?>
<OfficeApp xmlns="http://schemas.microsoft.com/office/appforoffice/1.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:bt="http://schemas.microsoft.com/office/officeappbasictypes/1.0" xmlns:ov="http://schemas.microsoft.com/office/taskpaneappversionoverrides" xsi:type="TaskPaneApp">
<Id>adc22a5f-62c5-472e-b258-2ae44be6fccf</Id>
<Version>1.0.0.0</Version>
<ProviderName>ML LABS</ProviderName>
<DefaultLocale>en-US</DefaultLocale>
<DisplayName DefaultValue="ML LABSII" />
<Description DefaultValue="ML LABSII"/>
<Hosts>
<Host Name="Workbook" />
</Hosts>
<DefaultSettings>
<SourceLocation DefaultValue="http://172.22.136.62:3000/" />
</DefaultSettings>
<Permissions>ReadWriteDocument</Permissions>
</OfficeApp>
I have tried and the web app loads from other machine browsers with no issues.