update code for use 64 bits systems

[Yoel Duady]

How to update existing code for use 64 bits systems
I have created the project in Access 2007 and now upgrade into Office 2013.
When I open the DataBase I get an eeror messages
Thanks

[NeoPa]

Is it an upgrade to 64-bit, or an upgrade to 2013, or even an upgrade to both?

Upgrading to both at the same time is probably a bad idea. If you need to do that then first update to the 32-bit version and only move on to the 64-bit version when all is working correctly there.

As far as 64-bit work is concerned I would suggest that there are probably a number of blogs out there that cover that. I've heard some items that have been discussed but wouldn't be confident that I could provide a full list of the things to look out for.

[NeoPa]

I did a little bit of preliminary digging for you and found this article (Compatibility Between the 32-bit and 64-bit Versions of Office 2010) from Microsoft that probably covers most, if not all, of what you need for moving to 64-bit Access.

I searched using {upgrade code to access 64-bit} and this was just the most useful page I found. There's more out there waiting to be found in the unlikely event that this first one doesn't answer all your questions.

[PhilOfWalton]

Advice in the past was to avoid the 64 bit version of Access as there were incompatibilities particularly with Active-X and Com Addins. Certainly when I last looked there was no 64 bit version of MSCOMCTL.OCX which I needed. Whether this situation has changed I don't know.
Phil

[NeoPa]

The advice from Microsoft is still that it should be avoided unless you have a need for anything that it can handle but 32-bit can't. It's certainly very different from, and less fully supported than, the 32-bit versions.