I have the following code:

var items = _context.DbSetName
             .Where(c => ...)
             .Include(c => c.NavigationProperty)
             .AsNoTracking()
             .ToList();

But when I want to update the main entity, I get an error that the entity related to the main entity can’t be tracked because an entity with the same id is already being tracked.

So I also tried to detach it manually before updating it and saving it the following way:

foreach (var item in items)
{
    if (item.NavigationProperty != null)
    {
        _context.Entry(item.NavigationProperty).State = EntityState.Detached;
    }

    _context.DbSetName.Update(item);
}

await _context.SaveChangesAsync(ct);

But I still get the same exception.

The exception occurs during at the Update and not the at the SaveChanges method.