This problem is very frustrating... I am developing a SharePoint hosted add-in. In this project a I have added a Web Part and code to the MyWebPart.aspx file.

When I publish a new version of the add-in (I am in round 34 at the moment) and add it to my test site, sometimes I can customize the home page and add the WebPart to it, sometimes it's not present!

I have not be able to understand the culprit.

In turns I have blamed:

  • Some setting in AppManifest.xml
  • Some unclosed tag in the html code in MyWebPart.aspx
  • Errors in javascript code in App.js

I have not found the crux of the problem, I am suspecting something related to SharePoint online, maybe related to some conflict during Removing/reinstalling the new Add-in version...

Can you give me any clue on where or how to investigare further?
Maybe some sort of log...

UPDATE After some more investigation I have a strong suspect that the problem is random and is linked to the App installation phase!

In two (classic) sites I have installed the same app, and in first one the Web Part doesn't appear while on the second one it appears.

So, as new evidence, in the first web site I have disinstalled the App, then reinstalled it... and voilà it has appeared!

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.