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AR# 60523

2014.x Vivado Install - Error - Entry Point Not Found


I am receiving a "vivado.exe -Entry Point Not Found" error:

The procedure entry point
??Rxp_autodetect@iostreams@isl@@QEAAXPEBDAEAV?$filtering_stream@Uinput@iostreams@boost@@DV?$char_traits@D@stlp_std@@V?$allocator@D@5Upublic_@23@@12@@Z could not be located in the dynamic link library libisl_iostreams.dll

Once the license check completes, I receive another message:

Execution of Pre/Post Installation Tasks Failed
Warning: Xilinx software was installed successfully, but an unexpected status was returned from the following post installation task(s)
ERROR:[Common 17-217] Failed to load feature 'core'.

What is the cause of these errors?


This can occur when the entry point to a specific library or even a library file is not found.

This happens because the MYXILINX (For ISE) or MYVIVADO (For Vivado) variable is set to a patch containing a library or executable from an older version of the software.

The solution in this case is to reset MYVIVADO to be empty.

To do this in Windows, use the command below:


In Vivado 2014.4 and later a "patches" directory can be created under the Vivado install directories.  

All tactical patches unzipped to this directory will be automatically found without having to set MYVIVADO.


AR# 60523
Date 01/16/2015
Status Active
Type General Article
  • Artix-7
  • Kintex-7
  • Virtex-7
  • Vivado Design Suite - 2014.1