How do I get Windows 10 to index mapped network drives?

Solution 1:

Windows does not support indexing network shares. You may still search them, but this is done in real-time without indexing, so may be quite slow.

You may enable Offline Files for a network folder by right-clicking it and selecting "Always available offline". This will basically copy the folder to your computer. To make it searchable, you will need to add "Offline Files" to Indexing Options.

None of the above options are really practical.

The correct way to do that is to store the files on Windows Server with the "Windows Search Service" role installed. The server will index its shared folders, and the Windows client can then use this index.