If you see this error message Search Indexing was turned off when you open Windows 11/10 Start Menu, you need to enable Search Indexing. This post will help you resolve this issue successfully.
Search Indexing was turned off
You may have encountered a process called the SearchIndexer.exe in your Windows Task Manager. This process is the actual service that manages the indexing of your files for Windows Search. If this process is not working or turned On, you get to see this message.
Enable Windows Search Indexing
To resolve this issue, do the following:
1] Check Startup type of Windows Search Service
Run services.msc and navigate to Windows Search service. Right-click on it and select Properties. Next, set its Startup type to Automatic (Delayed Start). Click Apply/OK and restart your computer.
This Windows Service, provides content indexing, property caching, and search results for files, e-mail, and other content.
2] Run Windows Search Troubleshooter
Open Control Panel > Indexing Options. Click on the Troubleshoot search and indexing link that you see.
Run the Windows Search and Indexing Troubleshooter that pops up.
You can also run the following command in a CMD to bring it up:
msdt.exe /id SearchDiagnostic
This troubleshooter will troubleshoots problems with Windows search and indexing.
Doing these two things should help you resolve the issue.
If you find that your Search Indexer is not working correctly, you may want to check my tutorial on how to Troubleshoot Windows Search Indexing errors based on which the first MVP Fix It was released.