2.4-2.6-upgrade-downgrade-procedure.rst

|action| Procedure

Once upgraded to MongoDB 2.6, you cannot downgrade to any version earlier than MongoDB 2.4. If you have text or 2dsphere indexes, you can only downgrade to MongoDB 2.4.10 or later.

Except as described on this page, moving between 2.4 and 2.6 is a drop-in replacement: