https://devzone.nordicsemi.com/f/nordic-q-a/63664/pca10040-won-t-connectI just downloaded SEGGER Embedded Studio (ARM V4.52c) and plugged in my rather old PCA10040. It offered to upgrade the driver, which I accepted. Now, when I click &quot;Connect J-Link&quot;, it appears to connect (&quot;CortexM4 on J-Link&quot;), and I can click on &quot;Targeten-USTelligent Community 13Sun, 12 Jul 2020 00:11:19 GMThttps://devzone.nordicsemi.com/thread/259573?ContentTypeID=1Sun, 12 Jul 2020 00:11:19 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ff987fb8-e4cb-4d45-a48a-4da4abff3c80rdpoor<p>Confirmed PICNIC error: the target processor (Project =&gt; Options =&gt; Debug =&gt; Debugger =&gt; Target Device) was not set properly.&nbsp; After setting it to nRF52832_xxAA, all happy.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/259572?ContentTypeID=1Sun, 12 Jul 2020 00:01:42 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d22fde94-6a92-45ac-ba3e-009b3daf4ac7rdpoor<p>Small update: I also used Device Manager to uninstall the JLink driver, reinstalled and rebooted.&nbsp; No change...</p><div style="clear:both;"></div>