Converting Access Database to MSSQL Database Using Microsoft SQL Server Migration Assistant for Access


I am trying to convent a Ms Access Database to MS SQL 2012, using Microsoft SQL Server Migration Assistant for Access version 6.0 but each time i try to convert it an error pops up. any ideas how i can solve the problem i reinstall the program Microsoft SQL Server Migration Assistant for Access , and it worked just ones and after that i have the same error. any help will be most appreciated

Access Object Collector error: Database Retrieving the COM class factory for component with CLSID {CD7791B9-43FD-42C5-AE42-8DD2811F0419} failed due to the following error: 80040154 Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)). This error may be a result of running SSMA as 64-bit application while having only 32-bit connectivity components installed or vice versa. You can run 32-bit SSMA application if you have 32-bit connectivity components or 64-bit SSMA application if you have 64-bit connectivity components, shortcut to both 32-bit and 64-bit SSMA can be found under the Programs menu. You can also consider updating your connectivity components from An error occurred while loading database content.

asked on Stack Overflow Jul 3, 2015 by emilios • edited Mar 28, 2016 by pghcpa

4 Answers


Just to complete the other side of the story...

If you have a 64-bit setup, you might have to go the other direction
and install the 64-bit MSAccess 2010 engine.

I'm running Access 2013, and I believe it is 64-bit. But the SMAA tool threw the 80040154 error.

  • I think SMAA can't or doesn't use the 64-bit connectivity drivers that come with 64-bit Access 2013.

So using the 32-bit SMAA didn't help.

  • Installing the 64-bit 2010 engine did.

I got it as a free standalone download here:

After the quick install of this, I simply started
SMAA 64-bit again,
and the wizard was successful the first time.

thanks to :

answered on Stack Overflow Dec 9, 2015 by Mike M

I remember this error. I had to find the EXE for 32-bit SSMA even though I was running 64-bit windows. The default installed location was:

C:\Microsoft SQL Server Migration Assistant for Access\bin

And the filename was:


answered on Stack Overflow Jul 25, 2015 by pghcpa


I encountered the same error while using SSMA v7.7.0 for migrating from MS-Access 2016 DB to SQL Server 2017. Fortunately, I got it fixed by installing Microsoft Access Database Engine 2016 Redistributable

answered on Stack Overflow Mar 10, 2018 by Jihad Naji

with regards to installing the runtime environment of Access to get around the 80040154 error from SSMA: With Access 2016, I found that the runtime environment would not install because I already had Access installed. I needed to deinstall Access, then install the runtime only version. Then, SSMA would run without the 80040154 error. Total pain tho.

answered on Stack Overflow Jun 14, 2016 by SpydreV

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