Hi @Coco_l_asticot ,
Welcome to Microsoft Q&A!
Please re-run your VS as administrator.
You can use the option to change the IntelliSense completion mode: Edit > IntelliSense > Switch between automatic and tab-only IntelliSense completion or shortcut: Ctrl+Alt+Space. In suggestion mode, only the text you type is inserted into the code.
Update:
To disable autocomplete behavior when pressing space in a C++ project, you can go to Tools > Options > Text Editor > C/C++ > Advanced > IntelliSense > set “Use Aggressive Member List for Auto Member List” to “True”.
Sincerely,
Anna
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