Hi, This issue may be related to a temporary service disruption or a problem with your browser or session cache. Here are a few steps you can try to resolve it: 1. **Clear your browser cache and cookies**, then restart the browser and try again. 2. **Try using a different browser** or open a private/incognito window to rule out any extensions or cached data interfering. 3. **Ensure you're signed in with the correct Microsoft account** and that your permissions allow saving custom prompts. 4. If you're part of an organization, **check with your admin** to confirm that custom prompt saving is enabled for your tenant. 5. If the issue persists, it may be worth checking the Microsoft 365 Service Health Dashboard (if available to you) or reporting the issue via the **Feedback** button in the interface. Thanks and best regards, Daniele *Note: This response was prepared with support from Copilot to ensure clarity and completeness.*
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