If Windows 10 doesnt recognize the SD card reader, it might be the SD card reader driver issue.
To recover data from SD card, manage or format SD card,MiniTool softwareoffers easy free tools.
One solution to fix this issue is to download and reinstall the SD card reader driver.

Below is a detailed Windows 10 SD card reader driver download guide.
Windows 10 SD Card Reader Driver Download Guide
Way 1.
Download and use WinRAR to zip and unzip files on your box.
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Check the guide for Microsoft/Windows Defender download, install, uninstall, reinstall on Windows 10/11.
Also learn how to fix cant open Windows Defender.
MiniTool Power Data Recoveryis a professional data recovery software for Windows.

It tackles various data loss situations.
If you use a Mac, a topMac data recovery softwarecan help you recover deleted/lost files with ease.
you’re free to connect the SD card to your box, and launch MiniTool Partition Wizard.
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Right-hit the SD card and choose Format option.
Select FAT32 as the file system and format the SD card to FAT32.
Guide for Windows Malicious Software Removal Tool 64-bit/32-bit download for Windows 10/11.
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Use the MSRT tool to prevent your machine from prevalent malware.