Move on to a product that will work. Please read all that Prolific provides.

No need to copy files to the drivers directory, etc. The Internet is full of web pages discussing this problem, and hardly anyone really seems to understand why it's happening. Perhaps zip and email me the file? Jeddam, The device has only bit drivers. Hello, Thank you for posting the above solution.

Would it be possible to attach it here? Don't do this Move on to a product that will work. The drivers can be deleted in the Device Manager. This is the link to where I purchased it. driver

Vegan Fanatic pointed you here for Prolific. Hopefully, this helps someone out there. So, Prolific made a new chip and dropped all support for the old one thereby rendering the counterfeit chips unusable.

Prolific USB to Serial Drivers

Jeddam, End of Life version, it will not work. It will come back to haunt you. The device has only bit drivers. Windows will copy the files directly into the Driver Store for the system to use.

Donations are appreciated. And how do I do it please? There's even a whole webpage dedicated to them. Theft of intelligent property is a crime. When it finishes, nec nd-2500a driver Reboot your computer.

Prolific also recommends newer compatible products that will just plug and load. Unfortunately, it renders hundreds of legacy devices using the earlier chip inoperative.

Prolific USB-to-Serial Comm Port (COM4)

By continuing to browse this site, you agree to this use. Finally, as with all usb products, install the drivers first and then connect the device if Windows does not identify and install drivers after just plugging it in. Now you may specify a path to look for drivers. Double click to open its properties. Then run the installer again to install the correct driver.

These two combined worked well for me. If not, then the correct driver is not installed.

The latest version from the Microsoft driver repository does not because Prolific has deprecated the older chips because the Chinese were creating fake copies. Use it if for switches etc. DRIVER

You are right and it works for me. It's very difficult to get rid of it. driver

Prolific Comm To USB driver not working driver

Then all other drivers can still be updated via the default web search. The older driver remains intact. Leave it blank and choose to select a driver from a list of drivers on your computer. Unplug the adapter and plug back in again. It has nothing to do with Windows.

After all, it's absolutely great for business. Norton's won't like it, so to save all the grief of dealing with that beast you might want to disable your anti-virus before running the installer. Run the installer program. Scan hardware changes to verify. This file can be deleted later. driver

Getting a working driver installed by the average user is almost impossible. This can be beneficial to other community members reading the thread. It's a shame that owners of the legitimate hardware are the main ones being hurt by this.

Thank you for posting the above solution. Basically, you can do this via gpedit. You must follow ever step in the process precisely. There is no other way, I've tried everything. Thank you for the details as this is also part of the answer.

Choose to look on your computer. Office Office Exchange Server.

Please visit Prolific for a solution. Removing the program will not delete the drivers. driver