My first ventures into Arduino were on a Win7 machine and I never had the problem.
Not sure if you can get to it (because of above), but can you determine the VID and the PID? In device manager, right click the unknown device, select properties, go to the tab Details and from the dropdown select Hardware Ids.
The specific driver is in the IDE subfolder "drivers"
FORUM search should also find you some relevant details too.
Only changed to win 10 here last year and had no issues same as sterretje.
Things that can cause driver issues usually boil down to additional security or a policy in effect on a loan computer (EDU / CORPORATE)
Often installing (re-install) the IDE as a full administrator can help.
Thanks for the reply.Sorry for not giving all the info.
Arduino UNO R3.
Win 7 64Bit Proffesional..Bitdefender security..full access to pc.
Arduino 1.8.13
I did uninstall the Arduino ide and re install it ... no change.
I can read the VID,PID.
In Programfiles/Arduino/Drivers..there is no Arduino UNO.inf file.
There is a Old_Drivers zip file , with the Arduino UNO and UNO R3 Drivers.
I did unzip the folder and then with the update--select from list--have cd --browse to the unzip folder and select Arduino UNO R3 ..this also fail to update.
There is actually a lot of UNO R3 Win7 usb driver failures that I found in Google.
They get solved by 2 options move to Win10 or the UNO use the generic CH340 chip that then work after installing the correct driver.
Might be the driver is only 32 Bit ..Note that I have Win7 64 Bit.
Did you verify that they are what the are supposed to be?
I have also been using the 64bit win7 and win10. Not behind a PC to verify but there are, if I'm not mistaken, 64bit drivers somewhere in the driver directory.
Because you got it working on another win 7 box it would indicate a local issue.
IIRC bitdefender may not fully disable like some other antivirus does.
After you disable it double check in both SERVICES and PROCESSES that none of the bitdefender items are still running.
I may be wrong but I think a few others have had a similar issue.
Know that in at least one case they removed the AV to install the IDE and drivers.
With that in mind I have attached some additional instructions.
The VID and PID id's is the same on both working and no-working pc.
Funny that the pc that does work also have Bitdefender and I did not stop it and also did not run as Admin..but Arduino was never installed on that pc.
