Error: "Activation could not be completed because the InfoPath Forms Services support feature is not present ."

Question

We have been using form uploaded on sharepoint online and after a simple modification (adding some text fields) the form shows the following error:

"Activation could not be completed because the InfoPath Forms Services support feature is not present ." I have tried with no success:

• a) Uploading an old versión that used to work;
• b) Creating a new form library for the same form;
• c) Creating a new form library for a new form;

All other site collections in the farm do not have this issue. Please help on how to resolve this.

Answer 1

Try de-activating and reactivating the "SharePoint Server Enterprise" features at both the site collection and the site level.

Update:

Try de-activating and re-activating "IPFSSiteFeatures" feature. It is a hidden site collection feature. We can do that with PowerShell.

The "IPFSSiteFeatures" feature id "c88c4ff1-dbf5-4649-ad9f-c6c426ebcbf5".

SharePoint Online: Deactivate Feature using PowerShell

How to enable a SharePoint Online Feature using PowerShell

Answer 2

Disable-SPFeature "IPFSSiteFeatures" -URL "http://yoursitecollectionURL" 
Enable-SPFeature "IPFSSiteFeatures" -URL "http://yoursitecollectionURL" 

This fix worked for me.