Digital content coediting serialization support

One or more computer-readable storage media storing instructions that, responsive to execution by a processing device, causes the processing device to perform operations comprising:

• detecting, by a service provider system as part of a coediting session, a mismatch based on a first fingerprint generated as describing a change in state of digital content that is maintained as part of a coediting session locally by a first client device;
• resolving, by the service provider system, the mismatch based on the fingerprint and a second fingerprint generated by a second client device as part of the coediting session;
• and
• communicating, by the service provider system, a result of the resolving to the first client device.

A client device comprising:

• a processing device;
• and
• a computer-readable storage medium storing instructions that, responsive to execution by the processing device, causes the processing device to perform operations including:
• locating a portion of a document model of digital content that lacks coediting serialization support;
• executing a detector module configured to inspect a named document state of the digital content as associated with the portion of the document model;
• selecting a mode from a plurality of modes based on the named document state;
• and
• control access to a coediting session with at least one other client device based on the selected mode or whether the detector module detects the named document state.