I am trying deploy a solution to SharePoint Online (SPO), after looking at documentations about SPO, I found only Sandbox Solutions and Apps can be deployed to SPO, but my solution is a Farm Solution.

There are too many limitations in Sandbox Solutions and Apps, such like:

  1. Limited access to file system (Application Page);
  2. Server side limited access to external data (External Web Service);
  3. GAC

Seems all stuffs needs to find workaround to fix.

But I found someone said, you can deploy Full-Trust Solutions on SPO Dedicated, but you need got Certification from SPO (or Microsoft?).

So I checked the list on SPO Dedicated http://technet.microsoft.com/en-us/library/dn151709.aspx#bkmk_AccessServices , but seems all types of SPO dedicated is NO with Full-Trust Solutions.

So my question is: is that true for we can got this kind certification from SPO? If it is true, could you help give me some information about this? Because I cannot find anything about it on MSDN or other web sites.

PS: If there is good documentation about migrating Farm Solutions to Sandbox Solutions (or Apps), please also share with me.

1 Answer 1


You can't deploy farm solutions on spo period.

However you can work around every issue there is with sandbox with using csom and apps.

Take a look here.


If it goes down I will update this link.

UPDATE OfficeDev Patterns and Practices website is the run to location, also you can use the free code migration assessment tool which is linked from the PnP website.

  • Hi Hugh Wood, please check the slide slideshare.net/aribakker/developing-for-share-point-online, it mentioned Office 365 Dedicated - Farm solutions allowed (requires Microsoft approval). But I can't searched anything with this. Commented May 27, 2013 at 8:02
  • confirmed with Ari Bakker ‏on twitter: @zehaozh the slide is for SharePoint 2010 and farm solutions are no longer allowed in sharepoint online dedicated - bit.ly/ZrnyAJ Commented May 29, 2013 at 1:23
  • Sorry missed the notification of your reply. The upside is with the advent of 2013 spo is so much more powerful with apps and CSOM.
    – Hugh Wood
    Commented May 29, 2013 at 8:18

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