Fatal error cvt1100: duplicate resource-type: manifest, name: 1, language: 0 × 0409 Solution

Cvtres: Fatal error cvt1100: duplicate resource -- type: manifest, name: 1, language: 0x0409

1> linking...
1> cvtres: Fatal error cvt1100: duplicate resource. Type: manifest, name: 1, language: 0x0409
1> link: Fatal error lnk1123: failure during conversion to coff: file invalid or invalid upt

Solution:

Open the RC file and find manifest. Comment out or remove the segment or line.

You can also go to the resource file to check whether the "resource ID is repeated". During DLL creation, because the resource file is manually edited, this situation is particularly prone: