Dear SLCOOPER,
Losing shortcut assignments repeatedly after building them up is understandably frustrating, especially when they work fine for weeks. From my research, Word keyboard shortcuts are stored in whichever document or template you select under Save changes in in the Customize Keyboard dialog. There is no universal Microsoft 365 shortcut profile, and the assignments apply to Word only. Excel and PowerPoint do not share this customization mechanism, so shortcuts defined here will not carry across to the other apps.
On the cause, Office updates overwriting Normal.dotm is possible but usually not the main reason. More common causes are Word failing to save the template on exit, profile cleanup or roaming profile software, an add-in interfering with the save, or a policy or script replacing the template in a managed environment. The more durable approach is to stop relying on Normal.dotm and use a separate global template instead. Templates placed in Word's Startup folder load automatically as add-ins every time Word starts, and they can hold keyboard shortcuts, macros and Building Blocks.
- Back up first, close Word and copy
Normal.dotm from %APPDATA%\Microsoft\Templates somewhere safe.
- Create the template: In Word, save a blank file as a macro enabled template, for example
MyShortcuts.dotm, into %APPDATA%\Microsoft\Word\STARTUP. This folder is a Trusted Location by default, so macros in it will run.
- Restart Word so the template loads as a global add-in. You can confirm it under File > Options > Add-ins > Manage: Word Add-ins > Go > Templates.
- Assign the shortcuts: Go to File > Options > Customize Ribbon > Customize, and in the Save changes in box select
MyShortcuts.dotm rather than Normal. Then assign each shortcut as usual.
- Save the template. Close Word and accept the prompt to save changes to the template.
If the shortcuts still vanish after this, that would point to something on the machine removing or resetting files in your profile, which is worth raising with your IT team if this is a managed device.
I hope this helps. Looking forward to your reply.
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