Hi Nancy O'Neil,
Based on what you've described, the 30-day security information wait period does not automatically prevent you from using your computer. The security hold mainly affects account recovery and certain Microsoft account security actions.
However, if Windows is asking you to reset your PIN and requires verification through the old recovery information that is no longer available, you may be unable to sign in with that Microsoft account until the security update completes.
If the device has another local administrator account, you can sign in with that account and access your files from there. If you recently used the PC offline, disconnecting from the internet and restarting may allow Windows to use previously cached credentials.
I hope this helps clarify the situation. Let me know if you need further assistance, feel free to ask me by clicking "Add Comment" or "Add Answer" if you cannot add comment so your response will be visible. Thanks for your effort.
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