Microsoft plans to retire some Compatibility Mode options in desktop Word, potentially changing layouts in documents created or last saved in Word 2010 or earlier, according to Neowin and The Register. Source Source
Neowin reports that the rollout timelines list only certain customer environments. Whether the change also applies to personal and other enterprise customers remains unclear. Source
Compatibility Mode helps newer versions of Word preserve older documents’ layouts and switches off newer features while those files are open. The mode itself isn’t being retired. Source
The Register quotes Microsoft’s warning: “Affected documents may show layout differences, such as text reflow, changes in spacing or page count, or images and shapes moving to another page.” Source
Microsoft’s stated reason, quoted by The Register, is “To simplify how Word handles document layout and provide a more consistent experience across platforms.” Neither report names the settings being removed. A more consistent experience is an awkward pitch to anyone whose carefully placed picture might change pages. Source Source
When—and what to check
Both outlets put the planned Windows rollout start in December 2026; The Register reports completion by January 2027. Those dates aren’t confirmed for every Word user. The reports disagree on Mac timing: Neowin says May 2027, while The Register says early 2027. Source Source
To preserve a document’s layout, Microsoft advises users to “consider exporting it to PDF before the change,” according to The Register. The outlet also suggests checking older templates, forms and other files where page breaks matter. Source
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