In the last couple of weeks, we have gotten a couple of people struggeling with accessing tools that support ARM in Atmel Studio. This includes Atmel-ICE, Segger Tools, EDBG and JTAGICE3v3.
Symptoms: None of the above tools are visible inside Atmel Studio, even if all drivers are installed and active.
Reason: Due to the infinite wisdom in windows, sometimes the loader picks up a external JLinkARM.dll (Segger userland driver) provided by another program. If this version is incompatible (older) than the one expected by Atmel Studio, the ARM support subsystem (bundle) crashes when it loads and all ARM capable tools will not be loaded.
I will be pushing a page to the Atmel Studio FAQ on the webdoc, but here's a preview of the page from our staging server. Hope it helps :)