This problem has been existing for a long time now. I am having a Lumia 640 XL dual sim(India) running Production build of Windows 10 mobile. I have provided details from "Extras & Info" app (except for IMEI). I hope this will not be a personally identifiable detail, but rather may help you pinpoint the issue.

Whenever I try to download a store app or when a already installed app is due for an update, it doesn't download or update but shows the error code 0x80070006. This specifically happens for those apps which are installed on the SD card. The apps which are installed on internal memory mostly installs and updates fine.

Every time, the phone boots up, it shows SD card error. Multiple times, I have tried letting the SD card troubleshooting run. But after several hours too, it doesn't finish, so I just have to skip it to save time.

The SD card that I am using in this phone is this model (Strontium Nitro 64GB 85MB/s UHS-1 Class 10 MicroSDXC Memory Card (SRN64GTFU1R)

However, all other functions that uses SD card like Photos, other media files, games etc run just fine and face no problems.

Phone details



RAM - 1GB Manufacturer Name : RM-1067_1005 Manufacturer Name : RM-1067_1005 Mobile Operator : 000-IN Configuration ID : 1005.0232B8 Core Build ID : 6230.54(02177.00000.15184.36000) BSP Release : 21777.0000 Active Customer Configuration : 16918 Master Configuration Label : 15wk16_1 Preloaded Content Label : 15wk17_1 Application Version : 3.15.4.28

Build Creation Date : 07/05/2015

I am desperately looking for a solution for this problem. I already searched through the community and through search engines. But I didn't find any solution listed for Windows 10 mobile. I only find a solution listed for Windows 10 PC and it involves Control Panel (http://answers.microsoft.com/en-us/windows/forum/apps_windows_10-winapps/error-code-0x80070006-always/a3108570-efa8-4dcf-9a15-9e3d24ea415b) which would obviously not be suitable for mobile.