Index: randombytes.c
==================================================================
--- randombytes.c
+++ randombytes.c
@@ -78,11 +78,15 @@
 #  include <wincrypt.h>
 static long getrandom_impl(void *buf, unsigned int buflen) {
 	HCRYPTPROV provider;
 	BOOL cac_ret, cgr_ret;
 
-	cac_ret = CryptAcquireContextA(&provider, NULL, NULL, PROV_RSA_FULL, CRYPT_SILENT);
+	cac_ret = CryptAcquireContextA(&provider, NULL, NULL, PROV_RSA_FULL, CRYPT_SILENT | CRYPT_VERIFYCONTEXT);
+	if (cac_ret == FALSE) {
+		cac_ret = CryptAcquireContextA(&provider, NULL, NULL, PROV_RSA_FULL, CRYPT_SILENT | CRYPT_VERIFYCONTEXT | CRYPT_NEWKEYSET);
+	}
+
 	if (cac_ret == FALSE) {
 		return(-1);
 	}
 
 	cgr_ret = CryptGenRandom(provider, buflen, (BYTE *) buf);