Hi, Please help me on this. I have installed "R" 3.1.2 version (64 bit) and receiving the follwowing error message while launching the Rx64 desktop icon. "R for Windows GUI front-end has stopped working. Close the program. The application was unable to start correctly (0xc0000005) " I tried the latest version 3.2 (64 bit R ) too and receiving the same error message. (I do not have any issues with the 32 bit installations. Its working perfectly fine. ) Here is the infoFrom the event log: Faulting applicaiton name: Rgui.exe Faulting Module name: ntdll.dll Exception code: 0xc0000005 Faulting Process id:0x1bf4 Fautling applicatio path:C:\Programfiles\R\R-3.1.3\bin\x64\rgui.exe Faulting Module path:C:\Windows\System32\ntdll.dl Please let me know whats causing this issue. Please let me know how to fix this issue -- View this message in context: http://r.789695.n4.nabble.com/R-64-Bit-installation-Issues-tp4706259.html Sent from the R help mailing list archive at Nabble.com. Sent from my iPhone [[alternative HTML version deleted]]