The issue with the Wi-Fi connection in Windows 11 resulting from the December cumulative update has been resolved by Microsoft within a day using the Known Issue Rollback system. Learn how to address Wi-Fi disconnections on Windows 11 computers here.
Microsoft resolved the Wi-Fi problem on Windows 11.

Microsoft solved the issue for users by utilizing KIR (Known Issue Rollback) without requiring them to uninstall updates or download an additional patch. The company conducted the fix remotely while retaining the corrections made by the previous patch. Restarting the computer can expedite the resolution process, as stated by the Windows developer.
Business Computers’ Group Policy
For corporate computers, the installation of a special Group Policy named “Windows 11 22H2 KB5032288 231029_032011 Know Issue Rollback” is required. It is indicated on the Microsoft page detailing the issues with the KB5032288 update released in early December that a specific Group Policy needs to be installed and set up for devices managed by organizations.
To accomplish this, simply navigate to Settings > Administrative Templates
Which Windows computers have been impacted?
Wi-Fi inconsistencies were only experienced by Windows 11 users in versions 22H2 and 23H2 with KB5032288 and KB5033375 updates, while Windows 10 users were not affected by this issue.