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PSoC™ 5, 3 & 1

JBtj_3717001
New Contributor

Hello all,

Our device is using the Cypress ARM Cortex-M3 (CY8c5866LTI-LP022, PSoC5800). It stores data which is sent to the client using USB.

For this, we install the Cypress USB UART driver (https://www.cypress.com/documentation/software-and-drivers/microsoft-certified-usb-uart-driver ) on the PC.

All works splendid, however...

On some of the windows 10 computers, the driver disappears after an update.

Untitled.png

The fix is simple: Right click the Unknown device -> update drivers -> automatically search for drivers -> done.

All is working again... however:

Why does this happen? and what can I do about it so it won't happen again / or is solved automatically/programatically.

Best regards,

JB

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1 Solution
NoriakiT_91
Employee

Please try Microsoft's USB serial driver.

USB serial driver (Usbser.sys) - Windows drivers | Microsoft Docs

The INF file usbser.inf is located in the folder C:\Windows\INF on my Windows 10 PC.

View solution in original post

3 Replies
AnkitaS_51
Employee

Hello,

I think you need to contact Microsoft for this issue.

There are similar queries which as follows where certain drivers were missing after Windows 10 update:

Driver Missing after Windows Update - Microsoft Community

Missing drivers after Windows 10 update - Microsoft Community

Thanks,

Ankita

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NoriakiT_91
Employee

Please try Microsoft's USB serial driver.

USB serial driver (Usbser.sys) - Windows drivers | Microsoft Docs

The INF file usbser.inf is located in the folder C:\Windows\INF on my Windows 10 PC.

View solution in original post

JBtj_3717001
New Contributor

Thank you for your answer. It seems that if I select the windows driver, no USB to UART shows up on the device manager, however, all works perfectly fine!

What I do find weird, is that the default windows driver is not (always) automatically detected as compatible driver.

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