Method for producing an anti-resonant hollow core fiber comprising a hollow core extending along a longitudinal axis of the fiber and an inner sheath region surrounding the hollow core, which sheath region comprises a plurality of anti-resonance elements, having the method steps of: (a) providing a cladding tube comprising an inner bore of the cladding tube and a longitudinal axis of the cladding tube along which a cladding tube wall extends, delimited by an inner side and an outer side, (b) providing a number of anti-resonance element preforms that are composed of a plurality of nested tubular structural elements (5a; 5b), comprising an ARE outer tube and an ARE inner tube inserted therein, wherein the structural elements (5a; 5b) have a longitudinal structural element axis, (c) arranging the anti-resonance element preforms at target positions on the inner side of the cladding tube wall to form a primary preform for the hollow core fiber, which comprises a hollow core region and an inner sheath region, and (d) elongating the primary preform to form the hollow core fiber, or further processing the primary preform into a secondary preform from which the hollow core fiber is drawn, wherein the further processing comprises a single or repeated implementation of one or more of the following hot-forming processes: (i) elongation, (ii) collapse, (iii) collapse and simultaneous elongation, (iv) collapse of additional sheath material, (v) collapse of additional sheath material and subsequent elongation, (vi) collapse of additional sheath material and simultaneous elongation, characterized in that a cladding tube having an outer diameter in the range of 90 and 250 mm and a length of at least 1 m is provided, and in that tubular structural elements (5a; 5b) are provided of which at least a portion has a wall thickness in the range of 0.2 and 2 mm and a length of at least 1 m, and in that the structural elements (5a; 5b) are arranged in the inner bore of the cladding tube in accordance with method step (c) with a vertically oriented longitudinal axis of the cladding tube, wherein the structural elements (5a; 5b) are respectively positioned at the target position at their upper face end. (a) providing a cladding tube comprising an inner bore of the cladding tube and a longitudinal axis of the cladding tube along which a cladding tube wall extends, delimited by an inner side and an outer side, (b) providing a number of anti-resonance element preforms that are composed of a plurality of nested tubular structural elements (5a; 5b), comprising an ARE outer tube and an ARE inner tube inserted therein, wherein the structural elements (5a; 5b) have a longitudinal structural element axis, (c) arranging the anti-resonance element preforms at target positions on the inner side of the cladding tube wall to form a primary preform for the hollow core fiber, which comprises a hollow core region and an inner sheath region, and (d) elongating the primary preform to form the hollow core fiber, or further processing the primary preform into a secondary preform from which the hollow core fiber is drawn, wherein the further processing comprises a single or repeated implementation of one or more of the following hot-forming processes: (i) elongation, (ii) collapse, (iii) collapse and simultaneous elongation, (iv) collapse of additional sheath material, (v) collapse of additional sheath material and subsequent elongation, (vi) collapse of additional sheath material and simultaneous elongation, characterized in that a cladding tube having an outer diameter in the range of 90 and 250 mm and a length of at least 1 m is provided, and in that tubular structural elements (5a; 5b) are provided of which at least a portion has a wall thickness in the range of 0.2 and 2 mm and a length of at least 1 m, and in that the structural elements (5a; 5b) are arranged in the inner bore of the cladding tube in accordance with method step (c) with a vertically oriented longitudinal axis of the cladding tube, wherein the structural elements (5a; 5b) are respectively positioned at the target position at their upper face end. (i) elongation, (ii) collapse, (iii) collapse and simultaneous elongation, (iv) collapse of additional sheath material, (v) collapse of additional sheath material and subsequent elongation, (vi) collapse of additional sheath material and simultaneous elongation,