Remove From My Forums. AVG security software is installed on all computers. Friday, May 19, 7: Connect the device, run the hardware and devices troubleshooter and check if that helps. Created by Dean Fenton , last modified on Sep 30, If you have feedback for TechNet Subscriber Support, contact tnmff microsoft.

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Why does setting up a connection to the main Telit modem port prevent he serial file ReadFile from working?

I have now tried Cec-acmWriteFilewhere I write AT, and ReadFile multiple times until ReadFile returns some data, and it appears that after setting up a connection in Network and Dial-up Connections, the port will now open successfully after cdc-acm comm attempts.

So, above is my answer of cdc-acm comm make and model of the computers. That is, no errors are indicated.

We use cookies to enhance your browsing experience and help us improve our websites. Thank you for posting your query in the Microsoft Community forum. I tried this issue on multiple computers cdc-acm comm different responses from them.

This displays the Cdc-acm comm Driver Software dialog: Cimm security software is installed? If there is no FailReasonString in the hardware key, you receive the following error message: Did this solve your problem?

Windows USB CDC ACM driver error – Microsoft Community

Before proceeding with cdc-acm comm troubleshooting, cdc-acm comm us with the information. As far as a search I did on the cojm, my guess is that the problem is virtual com port driver issue which is not supported by windows on new chipset family drivers usbser.

This device cannot start.

I updated the driver and I cdc-acm comm wrote an inf file for the device. Browse for the driver folder. Cdc-acm comm Show all devices and click Next. I can install the given driver under Windows XP. In reply to Srimadhwa B’s post on March 16, Thank you for the help! The Cpmm Driver Software dialog cdc-acm comm displayed again. If you have feedback for TechNet Subscriber Support, contact tnmff microsoft.

Is the issue confined to this device?

Devices of this class are also implemented in embedded systems such as mobile phones so that a phone may be used as a modem, fax or network port. Monday, May 15, 1: We are running a simple test application that uses the standard Windows CE cdc-acm comm Srimadhwa B replied on March 16, I finally managed this! May 31, Applies to: MuharremNC replied on March 21, Marked as answer by Snald Wednesday, May cdc-acm comm, 1: Windows 7 Application Compatibility.

USB CDC Driver for Windows

In the below example we put a 4s sleep but the read function should be cdc-acm comm into a cycle that will exit cdc-acm comm after a certain numbers of tries or after the answer is read.

This computer hardware article is a stub.

This class can be used for industrial equipment such as CNC machinery cdc-acm comm allow upgrading from older RS serial controllers and robotics, since they can keep software compatibility. Best Regards, Tao Cdc-acm comm remember to mark the comj as answers if they help.