Question : Microsoft Exchange OLEDB was unable to register OnSyncSave event for Schema propagation on MDB startup HRESULT = 0x8000ffff.

Error message in Event Logs  Source : EXOLEDB Event ID : 112  reports  message  "Microsoft Exchange OLEDB was unable to register OnSyncSave event for Schema propagation on MDB startup HRESULT = 0x8000ffff. "
Look on the internet and error says : - if there are 2 schemaroot folders in your system folders on the Exchange server, then delete the older folder and this should remove your errors. I do have 2 of these folders but, I can see no way or removing the folder from the MMC "SYSTEM MANAGER" so how do I remove this folder ?

Answer : Microsoft Exchange OLEDB was unable to register OnSyncSave event for Schema propagation on MDB startup HRESULT = 0x8000ffff.

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http://forums.msexchange.org/m_1800403901/mpage_1/key_/tm.htm#1800403901