Search the web for and download the xlive.dll file from a trusted GTA modding site. Extract the xlive.dll file.
Right-click your save folder, go to Properties > Security , and ensure your user has Full control . Detailed Troubleshooting ☁️ Fix OneDrive Conflicts gta 4 save failed please check your storage link
It sounds obvious, but GTA IV requires a small amount of "buffer" space on your C: drive to manage temporary swap files during the save process. Search the web for and download the xlive