diff --git a/okhttp/src/main/kotlin/okhttp3/internal/platform/Platform.kt b/okhttp/src/main/kotlin/okhttp3/internal/platform/Platform.kt
index 664f913964a1..9e0c362d6787 100644
--- a/okhttp/src/main/kotlin/okhttp3/internal/platform/Platform.kt
+++ b/okhttp/src/main/kotlin/okhttp3/internal/platform/Platform.kt
@@ -94,6 +94,14 @@ open class Platform {
       val context = readFieldOrNull(sslSocketFactory, sslContextClass, "context") ?: return null
       readFieldOrNull(context, X509TrustManager::class.java, "trustManager")
     } catch (e: ClassNotFoundException) {
+      null
+    } catch (e: RuntimeException) {
+      // Throws InaccessibleObjectException (added in JDK9) on JDK 17 due to
+      // JEP 403 Strongly Encapsulate JDK Internals.
+      if (e.javaClass.name != "java.lang.reflect.InaccessibleObjectException") {
+        throw e
+      }
+
       null
     }
   }