Error 2140 when attempting to start Directory Synchronisation - Reinstall Exchange?

----NEW TO EXCHANGE----

I have had problems for quite some time while attempting to start the Microsoft Exchange Directory Synchronisation service.

The error that is displayed after attempting this is: "Error 2140: An internal Windows NT error has occurred."

What I believe I need to do, having spoken already with Microsoft support is to install a fresh copy of Exchange 5.5 but before I do that, I need to know exactly what files I need to backup apart from priv.edb, pub.edb and dir.edb and what I will need to do in order to have exchange restored with the same information (without relying on a tape-restore).

I also want to run consistency and redundancy checks on the priv.edb and pub.edb files while they are off-line, anything i should be considering before doing so?

This question is very urgent as several employees are now waiting on files through public folders that are not being replicated from our UK site.

Thanks in advance.
pete1ryanAsked:
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ahmedbahgatCommented:
before you install a fresh copy of exchange, can you make sure that the account used for all exchange services is a member of the local Administrators Group

cheers
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BembiCEOCommented:
Recover EX5,5 in short words:

Save priv, pub, dir.edb

For recovering you need
- the original name of the Organisation, Location
- the name of the server (must be the same than the old one)
- the users-accounts (installation admin and may be additional service account), which are used for the original installation must be still valid
- same configuration / service packs should be installed.

The best (secure way) if you never have done this, setup a second (trainings-) server, which fullfils the needs above and which have the original user database (you can use a BDC or second DC). Copy the priv, pub, dir.edb on this server. Start the services. You may have to run isinteg -patch, if the information store will not start. If this test works, you can reinstall your productive server.
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