diff --git a/mlir/include/mlir/IR/Builders.h b/mlir/include/mlir/IR/Builders.h
--- a/mlir/include/mlir/IR/Builders.h
+++ b/mlir/include/mlir/IR/Builders.h
@@ -10,6 +10,7 @@
 #define MLIR_IR_BUILDERS_H
 
 #include "mlir/IR/OpDefinition.h"
+#include "llvm/Support/Compiler.h"
 
 namespace mlir {
 
@@ -392,10 +393,14 @@
   template <typename OpTy, typename... Args>
   OpTy create(Location location, Args &&...args) {
     OperationState state(location, OpTy::getOperationName());
-    if (!state.name.getAbstractOperation())
-      llvm::report_fatal_error("Building op `" +
-                               state.name.getStringRef().str() +
-                               "` but it isn't registered in this MLIRContext");
+    if (LLVM_UNLIKELY(!state.name.getAbstractOperation()))
+      llvm::report_fatal_error(
+          "Building op `" + state.name.getStringRef().str() +
+          "` but it isn't registered in this MLIRContext: the dialect may not "
+          "be loaded or this operation isn't registered by the dialect. See "
+          "also "
+          "https://mlir.llvm.org/getting_started/Faq/"
+          "#registered-loaded-dependent-whats-up-with-dialects-management");
     OpTy::build(*this, state, std::forward<Args>(args)...);
     auto *op = createOperation(state);
     auto result = dyn_cast<OpTy>(op);
@@ -413,9 +418,13 @@
     // insert it yet.
     OperationState state(location, OpTy::getOperationName());
     if (!state.name.getAbstractOperation())
-      llvm::report_fatal_error("Building op `" +
-                               state.name.getStringRef().str() +
-                               "` but it isn't registered in this MLIRContext");
+      llvm::report_fatal_error(
+          "Building op `" + state.name.getStringRef().str() +
+          "` but it isn't registered in this MLIRContext: the dialect may not "
+          "be loaded or this operation isn't registered by the dialect. See "
+          "also "
+          "https://mlir.llvm.org/getting_started/Faq/"
+          "#registered-loaded-dependent-whats-up-with-dialects-management");
     OpTy::build(*this, state, std::forward<Args>(args)...);
     Operation *op = Operation::create(state);