Windows 10: Porting a dll from 32 to 64 bit

I ported a 32 bit dll with some functions inside called from Excel VBA to 64 bit. I started a new "Solution" with a single "Project" in freshly installed Visual Studio 2019 and I just used the old source and .def files. I have TWO problems:

-I had to remove the calls to MessageBox because it is flagged as undefined an I do have #include <windows.h>

-The dll itself wants to load VCRUNTIME140_APP.dll and UCRBASED.dll.


My suspect is I am not configuring the correct "type" of "Solution" or of "Project" and I am actually compiling a sort of Application.

I made all the suggested tricks: deinstall/install VS2019, VC Redistributable, ecc. with no success.


One strange thing is that in Project -> Properties -> Configuration Properties -> General ->Windows Store App Support I read "YES" and there is no way to set it to "NO". I fear this is the problem.

:)

 

Windows 32 bits to 64 bits

Hi Kulbeer,

To upgrade from Windows 10 32-bit to Windows 10 64-bit, we suggest that you check and follow the steps/instructions provided by
Andre Da Costa in his article.

We would appreciate it if you could get back to us and provide us your feedback.

 

Windows 10 Upgrade 32-bit to 64-bit

So, Windows 10 Upgrade is being rolled out worldwide, and I have 'reserved' my upgrade.

Currently my computer is running Windows 7 Pro 32-bit. I'm planning to 'upgrade' it to Windows 10 64-bit (via fresh install, of course).

After reading many references, these will be the steps I'll do:

1. Let the "Get Windows 10" app upgrade my OS to Windows 10 32-bit
   
2. Note the activation key
   
3. Download the Installation Media for Windows 10, but choosing 64-bit instead
   
4. Perform a clean install
   
5. Reactivate using the activation key in Step #2
   

(Of course I'll backup my data first.)

However, I still have some questions:

1. On Windows 7, the activation key does not differ between 32- or 64-bit versions. Is it still so with Windows 10?
   
2. Will I be able to download a different architecture on Step #3?
   
3. Is there anything I need to prepare beforehand?
   

Thank you for your assistance.

 

How do I install IE 32 bit and/or switch from 64 bit to 32 bit?

Windows 10: Internet Explorer

• You need to have Windows 10 64-bit(x64) to use this feature
• To check:
  • Click on Windows Key
  • Click on Settings
  • Click on System
  • On left panel click on About
  • On right panel check system type:
    • System Type: 64-bit operating system, x64-based processor
      • That means you have Windows 10 64-bit
    • System Type: 32-bit operating system, x86-based processor
      • That means you have Windows 10 32-bit
• Internet Explorer
  • 32-bit(x86):
    • C:\Program Files (x86)\Internet Explorer\iexplorer.exe
  • 64-bit(x64):
    • C:\Program Files\Internet Explorer\iexplorer.exe

Note:

• You cannot switch between Windows 10 32-bit to 64-bit. you need to re-install Windows 10 64 bit.
• To download Windows 10 64-bit:
  Microsoft - "Windows 10 - Download tool now"
• 
  
  
• 
  If you have Windows 10 64-bit, you can run any application which supports 64-bit and as well as 32-bit