Upgraded to new computer does not want shell32.dll looking for 64 bit code to update codes

Good morning,
I had a new computer upgrade, and found that when I use my old addins, an error occurs:
"The code in this project must be updated for use with 64-bit systems. Update Declare Statements and then mark them with PtrSafe attribute"

The code in error reads: "

Private Declare Function ShellExecute Lib "shell32.dll" Alias "ShellExecuteA" (ByVal hwnd As Long, ByVal lpOperation As String, ByVal lpFile As String, ByVal lpParameters As String, ByVal lpDirectory As String, ByVal nShowCmd As Long) As Long

"
What is the fix for this?

Thank you for any help you may be able to give me.

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