Michiel van Meersbergen wrote: I'm running into some troubles using the original binaries from the NSS releases directory. Whether I use the debug or the optimized binaries for NSS 3.11 (from WINNTPTBJ/) with the NSPR 4.6 binaries (also from WINNTPTBJ/), I always get 'error 126' as the corresponding error text to an NSPR error code, At the present time, it is best (IM) to not expect to get error strings from the "official" NSS shared libraries or other binaries. I hope to fix that in NSS 3.12. In the mean time, use these 3 header files: Sample code to do that is seen at #53