Why did my Windows 11 Pro PC lose the capability to search a network share?

I have a Windows 11 Pro PC on the network, that lost capability to search a network share. One of my users can’t search for files on the network share.

So here what I have done:

Rebuild Search Index

Rebuild the Windows 11 search index Indexing Options (via Settings >
Privacy & security > Searching Windows or Control Panel) > Advanced >
Rebuild under Troubleshooting

Network Discovery is on

Enable Remote Indexing

In the Registry (regedit.exe), create a DWORD AllowRemoteIndexing
(value 1) in
HKEY_LOCAL_MACHINESOFTWAREPoliciesMicrosoftWindowsWindows Search

Enabled Content Indexing on the Share

Properties > Sharing tab > Advanced Sharing

Added to Indexing Options

Indexing Options in Control Panel > Modify