MAPI Windows 7 64 bit

email com windows-7 64-bit mapi
epotter picture epotter · Mar 4, 2010 · Viewed 17.6k times · Source

I've got a legacy application that creates an email message with an attachment. The code uses the MAPI interface to create the message. This code has worked for quite some time.

When the application is run on a Windows 7 64 bit machine, the call to MAPILogon fails with a generic error code.

Is there an incompatibility with MAPI and Win7 64? Or is there some COM issue that I am not aware of?

Answer

epotter picture epotter · Mar 10, 2010

It looks like the problem depends on which API calls you are using.

Calls to MAPISendMail should work without a problem.

For all other MAPI method and function calls to work in a MAPI application, the bitness (32 or 64) of the MAPI application must be the same as the bitness of the MAPI subsystem on the computer that the application is targeted to run on.

In general, a 32-bit MAPI application must not run on a 64-bit platform (64-bit Outlook on 64-bit Windows) without first being rebuilt as a 64-bit application.

For a more detailed explination, see the MSDN page on Building MAPI Applications on 32-Bit and 64-Bit Platforms

Related questions

How to validate an email address in JavaScript

Is there a regular expression to validate an email address in JavaScript?

Read More
How to validate an email address using a regular expression?

Over the years I have slowly developed a regular expression that validates MOST email addresses correctly, assuming they don't use an IP address as the server part. I use it in several PHP programs, and it works most of the …

Read More
How to send an email using PHP?

I am using PHP on a website and I want to add emailing functionality. I have WAMPSERVER installed. How do I send an email using PHP?

Read More