Hello Everyone Good Morning! We have encountered a peculiar problem. We have Application developed and running on Labview RT platform. Application is loaded on PXI controller 8186 and running without any problem since 2 years. Now suddenly it is stopped working. All the instruments health is fine and gets detected in MAX (version 4.0) without any concern. We tried loading (deploying) the same application after formatting the Hard disk. It worked for some time and again stopped working. Now even loading again the same application even after formatting the hard disk is not working. Any clue, what could be the problem? Any virus or ??? Some more information:Hardware: 2- PXI 8186 RT controllers configured in redundancy mode using Serial Port, 2 Nos each of SCXI 8423 (RS 485 )card (total 4 cards), Software: Labview 8.0, Max 4.0 Looking for help to reactify the issue. Many thanks in advance. RegardsRakesh
