Error (170143): Final fitting attempt was unsuccessful Info (170236): Routing optimizations have been running for X hour(s) - Error (170143): Final fitting attempt was unsuccessful Info (170236): Routing optimizations have been running for X hour(s) Description Due to a problem in the Intel® Quartus® Prime Pro Edition software version 18.1 and earlier, you may see this fitter error when compiling for the Intel® Stratix® 10 devices. This error may occur when enabling the Signal Tap Logic Analyzer is enabled. Resolution This problem is fixed beginning with version 18.1 Update 1 of the Intel Quartus Prime Pro edition software. Custom Fields values: ['novalue'] Troubleshooting FB: 601416 ; 597254; False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Pro'] 18.1.1 18.1 ['Stratix® 10 FPGAs and SoCs'] ['novalue'] ['novalue'] ['novalue']