Possibly a software interloper. A vectored filtering application "protecting" you from malicious USB devices. Anti-virus tools. You might test for this by either; (a) install the same tools on the inner operating system on the VM, or; (b) disable or remove the tools from the outer operating system. The other root cause that springs to mind is a race condition on too-fast hardware, but that seems unlikely. On Sun, Dec 31, 2017 at 08:12:25PM +0000, David C Brown wrote: > Just rechecked and it is windows 7 not 8 that I am running. >=20 > As you say: if it was a driver issue I would expect the ICD2 to fail > completely. As it is it connects OK; it will program Ok; it just > can't connect to the debugger in the PIC. >=20 > But that is the only difference. The cables are identical and I have > made new cables from the ICD2 to the chip. Baffled. >=20 > __________________________________________ > David C Brown > 43 Bings Road > Whaley Bridge > High Peak Phone: 01663 733236 > Derbyshire eMail: dcb.home@gmail.com > SK23 7ND web: www.bings-knowle.co.uk/dcb > >=20 >=20 >=20 > *Sent from my etch-a-sketch* >=20 > On 31 December 2017 at 19:25, Harold Hallikainen > wrote: >=20 > > I wonder if it has to do with USB drivers. We had to go through some > > monkey motion to get USB drivers installed. It's documented at > > http://ftp.uslinc.com/ftp/Products/JSD-100/Documents/ > > Technical/Windows%208%20USB%20Driver%20Installation.pdf > > . > > > > If it were a driver issue, though, I'd expect MPLAB to not see the ICD2= at > > all. > > > > I'm still running MPLAB 8.92 under Winows 7. It continues to work well. > > I've tried migrating projects to MPLAB X without success. > > > > Harold > > > > > > > > > For some years I have used a Shuttle PC running windows XP as my lab > > > machine for debugging and programming mid range PICs such as the 16F8= 7 > > and > > > 16F87X using MPLAB 8.9. and an ICD2 Apart from the usual > > idiosyncrasies > > > associated with Microchip products it serves me well even if it is a = bit > > > slow compiling. > > > > > > Earlier this year I bought a used Thinkpad laptop running Windows 8 (= 32 > > > bit) and decided to use that as my lab machine since it was newer and > > > faster and took up less desk space. So I installed MPl8.92, shift= ed > > > the > > > ICD2 and set about programming. Unfortunately programming under the > > > debugger fails with the ICD0083 message. > > > > > > After some desultory web searching and tinkering I gave up,and reinst= ated > > > the old Shuttle. But today my son, visiting for Christmas, installe= d > > > something called Virtual Box which allow me to run XP in a window on = the > > > laptop And to my amazement I can use MPL8.92 successfully in = this > > > scenario. > > > > > > I suppose that I should be happy with this but I am puzzled and want = an > > > answer as to why MPLab won't run under windows 8. The programming > > > hardware and all the cables are the same so cable length doesn't come > > into > > > it. Any ideas??? > > > > > > I > > > __________________________________________ > > > David C Brown > > > 43 Bings Road > > > Whaley Bridge > > > High Peak Phone: 01663 733236 > > > Derbyshire eMail: dcb.home@gmail.com > > > SK23 7ND web: www.bings-knowle.co.uk/dcb > > > > > > > > > > > > > > > *Sent from my etch-a-sketch* > > > -- > > > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > > > View/change your membership options at > > > http://mailman.mit.edu/mailman/listinfo/piclist > > > > > > > > > -- > > FCC Rules Updated Daily at http://www.hallikainen.com > > Not sent from an iPhone. > > -- > > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > > View/change your membership options at > > http://mailman.mit.edu/mailman/listinfo/piclist > > > --=20 > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist --=20 James Cameron http://quozl.netrek.org/ --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .