A controlling device for a wireless communication device comprising a wireless communication performing unit configured to perform a wireless communication, the controlling device comprising: an acquiring unit configured to acquire setting information regarding a wireless setting for a wireless communication currently set in the wireless communication device; a determining unit configured to determine, using the setting information, whether the wireless setting indicates a first type of authentication method in which an authentication is performed by an authentication server or a second type of authentication method in which an authentication is performed by a device with which the wireless communication performing unit performs a wireless communication directly; and a providing unit configured to: provide a first screen to a displaying unit in a first case where a determination is made that the wireless setting indicates the first type of authentication method, the first screen indicating contents of a plurality of setting items included in the wireless setting, and provide a second screen which is different from the first screen to the displaying unit in a second case where a determination is made that the wireless setting indicates the second type of authentication method, the second screen indicating contents of a plurality of setting items included in the wireless setting; wherein: a content of at least one setting item of the plurality of setting items included in an object screen (90, 190) is capable of being changed via the object screen (90, 190), the object screen (90, 190) being at least one of the first screen and the second screen, and the controlling device being characterized in that it further comprises a deciding unit configured to perform an error decision whether or not contents of the plurality of setting items included in the object screen (90, 190) include an error, wherein the deciding unit is configured to perform the error decision by changing a target setting item used for the error decision in accordance with a content of a specific setting item indicating an authentication method included in the object screen (90, 190). an acquiring unit configured to acquire setting information regarding a wireless setting for a wireless communication currently set in the wireless communication device; a determining unit configured to determine, using the setting information, whether the wireless setting indicates a first type of authentication method in which an authentication is performed by an authentication server or a second type of authentication method in which an authentication is performed by a device with which the wireless communication performing unit performs a wireless communication directly; and a providing unit configured to: provide a first screen to a displaying unit in a first case where a determination is made that the wireless setting indicates the first type of authentication method, the first screen indicating contents of a plurality of setting items included in the wireless setting, and provide a second screen which is different from the first screen to the displaying unit in a second case where a determination is made that the wireless setting indicates the second type of authentication method, the second screen indicating contents of a plurality of setting items included in the wireless setting; wherein: provide a first screen to a displaying unit in a first case where a determination is made that the wireless setting indicates the first type of authentication method, the first screen indicating contents of a plurality of setting items included in the wireless setting, and provide a second screen which is different from the first screen to the displaying unit in a second case where a determination is made that the wireless setting indicates the second type of authentication method, the second screen indicating contents of a plurality of setting items included in the wireless setting; wherein: a content of at least one setting item of the plurality of setting items included in an object screen (90, 190) is capable of being changed via the object screen (90, 190), the object screen (90, 190) being at least one of the first screen and the second screen, and the controlling device being characterized in that it further comprises a deciding unit configured to perform an error decision whether or not contents of the plurality of setting items included in the object screen (90, 190) include an error, wherein the deciding unit is configured to perform the error decision by changing a target setting item used for the error decision in accordance with a content of a specific setting item indicating an authentication method included in the object screen (90, 190).