ACP can automatically use the services of Astrometry.net to provide all-sky plate solving. This is a far superior way to correct telescope pointing compared to the old "spiral search" feature. If you have a mount that gets "lost" such that its pointing error exceeds one field of view, and which can be synced, ACP can use all-sky solving to "find" the scope's position anywhere in the sky. All sky solving is available as a network service provided by Astrometry.net (nova.astrometry.net) and ACP uses this. It requires that ACP be connected to the internet. See below for information on setting up a "local" all-sky service so ACP can solve all-sky with no network connection.
If your mount cannot be synced (for example one with absolute encoders or a pointing model that cannot be synced), there is no "point" in solving all sky in an automated environment, so ACP will not even try. You can use Visual PinPoint to manually solve an image you take manually and use that to somehow adjust your mount.All-sky solving is provided by the PinPoint Astrometric Engine that is included with ACP. For more information, see the PinPoint 6.0 Reference, All Sky Plate Solving.
The settings that control ACP's use of all-sly plate solving are located in ACP Preferences, PinPoint & All-Sky tab. You can turn it on or off, provide an API key and provide the IP address or domain of an alternative service such as ansvr. For details see PinPoint 6.0 Reference, All Sky Plate Solving.
If you want to use ACP without internet service by installing Andy Galasso's ansvr, a local all-sky solving engine which uses local index files. Installation and setup are sell documented on Andy's web site. This is all covered in PinPoint 6.0 Reference, All Sky Plate Solving. Look in the section Solving without an internet connection.