Since Cumulative update KB4038788 MicroSD reader does not work

Hello,

As per the details regarding your concern, this can be an issue of a corrupted update. For us to resolve this, we can run the Windows Update Troubleshooter as an initial troubleshooting step. Download the link for Windows 10. Once done, you can manually check for any pending updates again and see if the issues persist.

Update us on how it goes. We'll be glad to help!

That doesn't help. And update was successful.

Chuwi Hi10 Plus, Dell, I.onik, Teclast and many others are reporting same problem with latest Windows update .

It seams that INTEL SD HOST CONTROLLER  (and "SD HOST CONTROLLERS") driver version was 10.0.15063.332 and now 10.0.15063.608 which caused this.

Both Intel driver was provided by Microsoft. There is no option to roll-back drivers.

Also, many users (like me) with SD cards which work are getting terrible slow writing speed.

Even when we download old Intel SD Host drivers, restart in special mode to install unsigned drivers, Device manager doesn't allow us to "update" to older version, it always says "The best driver software is already installed".

Microsoft needs to provide fix for this, I spend hours trying to fix this with no luck.

I tried many SD controller drivers including old Intel SD controller 6.3.9600.16408 (by Microsoft) which worked before Cumulative update KB4038788 with no luck. Main problem is that cards which was working before now has speed of writing only 0.9-1 Mbps but reading is now 36Mbps.

Before update it was stuck on 10/10Mbps but without freezing SD card and Explorer. 

Something was done in KB4038788 which caused all this.

KB4038788 is being widely reported as 'botched'. Do any of these help you? And there are more!!!!

 
https://www.tenforums.com/windows-10-news/93259-cumulative-update-kb4038788-windows-10-v1703-build-15063-608-a-5.html

https://malwaretips.com/threads/windows-10-kb4038788-botched.75381/

http://windowsreport.com/kb4038788-issues/

I already saw list of bugs (including Edge) but this is more important to me.

SD card has only 940KB/s to write and I can't even open any document since this update. All devices with Intel Z8300 now have this problem and Microsoft changed drivers in latest update but also something else because now not even older drivers resolve anything.

Apologies for the late response.  We suggest that you use that you use the Roll Back Driver feature. This will replace a device driver by using a previously installed version. To do this, follow the steps below:

1. Type Device Manager in the search files on the taskbar.
2. Click on Device Manager under Control Panel.
3. Double-click the device for which you want to restore the driver.
4. Click the Driver tab, and then click the Roll Back Driver button.

If there's anything else, do let us know right away.