A method for producing an anti-resonant hollow-core fiber which comprises a hollow core extending along a longitudinal axis of the fiber and an inner casing region that surrounds the hollow core and comprises a plurality of anti-resonant elements, comprising the method steps of: (a) providing a cladding tube, which comprises a cladding tube inner bore and a cladding tube longitudinal axis, along which a cladding tube wall extends, which wall is delimited by an inner face and an outer face, (b) providing a number of anti-resonant element preforms, (c) arranging the anti-resonant element preforms at desired positions on the inner face of the cladding tube wall to form a primary preform for the hollow-core fiber, which primary preform comprises a hollow core region and a casing region, and (d) elongating the primary preform to form the hollow-core fiber or further processing the primary preform to form a secondary preform from which the hollow-core fiber is drawn, the further processing comprising carrying out one or more of the following hot-forming processes once or repeatedly: (i) elongation, (ii) collapse, (iii) collapse and simultaneous elongation, (iv) collapse of additional casing material, (v) collapse of additional casing material and subsequent elongation, (vi) collapse of additional casing material and simultaneous elongation, characterized in that, in order to arrange the anti-resonant element preforms according to method step (c), a positioning template is inserted into the cladding tube inner bore, which template comprises holding elements for positioning the anti-resonant element preforms in the desired positions, and in that the positioning template comprises at least one latching means which interacts with a latching means counterpart in the cladding tube wall to form a force-fitting and/or form-fitting connection. (a) providing a cladding tube, which comprises a cladding tube inner bore and a cladding tube longitudinal axis, along which a cladding tube wall extends, which wall is delimited by an inner face and an outer face, (b) providing a number of anti-resonant element preforms, (c) arranging the anti-resonant element preforms at desired positions on the inner face of the cladding tube wall to form a primary preform for the hollow-core fiber, which primary preform comprises a hollow core region and a casing region, and (d) elongating the primary preform to form the hollow-core fiber or further processing the primary preform to form a secondary preform from which the hollow-core fiber is drawn, the further processing comprising carrying out one or more of the following hot-forming processes once or repeatedly: (i) elongation, (ii) collapse, (iii) collapse and simultaneous elongation, (iv) collapse of additional casing material, (v) collapse of additional casing material and subsequent elongation, (vi) collapse of additional casing material and simultaneous elongation, (i) elongation, (ii) collapse, (iii) collapse and simultaneous elongation, (iv) collapse of additional casing material, (v) collapse of additional casing material and subsequent elongation, (vi) collapse of additional casing material and simultaneous elongation,