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Deactivating the Disable Custom DocTypes update

Last Updated: Oct 12, 2016 02:14AM BST
You may get an error that says

DOCTYPE is disallowed when the feature "http://apache.org/xml/features/disallow-doctype-decl" set to true

This happens when the Critical Updates for DocType has been activated. Please De-Activate this critical update and everything should work normally.

To De-Activate it, please go to Setup and search for Critical Updates.





And on the Critical Update page, please DeActivate "Disable Custom DocTypes in Visualforce Markup".


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