diff --git a/clang-tools-extra/clangd/test/check-fail.test b/clang-tools-extra/clangd/test/check-fail.test
--- a/clang-tools-extra/clangd/test/check-fail.test
+++ b/clang-tools-extra/clangd/test/check-fail.test
@@ -1,5 +1,5 @@
 // RUN: cp %s %t.cpp
-// RUN: not clangd -check=%t.cpp 2>&1 | FileCheck -strict-whitespace %s
+// RUN: not clangd -enable-config=0 -check=%t.cpp 2>&1 | FileCheck -strict-whitespace %s
 
 // CHECK: Testing on source file {{.*}}check-fail.test
 // CHECK: internal (cc1) args are: -cc1
diff --git a/clang-tools-extra/clangd/test/check-lines.test b/clang-tools-extra/clangd/test/check-lines.test
--- a/clang-tools-extra/clangd/test/check-lines.test
+++ b/clang-tools-extra/clangd/test/check-lines.test
@@ -1,6 +1,6 @@
 // RUN: cp %s %t.cpp
-// RUN: not clangd -check=%t.cpp -check-lines=6-14 2>&1 | FileCheck -strict-whitespace %s
-// RUN: not clangd -check=%t.cpp -check-lines=14 2>&1 | FileCheck -strict-whitespace %s
+// RUN: not clangd -enable-config=0 -check=%t.cpp -check-lines=6-14 2>&1 | FileCheck -strict-whitespace %s
+// RUN: not clangd -enable-config=0 -check=%t.cpp -check-lines=14 2>&1 | FileCheck -strict-whitespace %s
 
 // CHECK: Testing on source file {{.*}}check-lines.test
 // CHECK: internal (cc1) args are: -cc1
diff --git a/clang-tools-extra/clangd/test/check.test b/clang-tools-extra/clangd/test/check.test
--- a/clang-tools-extra/clangd/test/check.test
+++ b/clang-tools-extra/clangd/test/check.test
@@ -1,5 +1,5 @@
 // RUN: cp %s %t.cpp
-// RUN: clangd -log=verbose -check=%t.cpp 2>&1 | FileCheck -strict-whitespace %s
+// RUN: clangd -enable-config=0 -log=verbose -check=%t.cpp 2>&1 | FileCheck -strict-whitespace %s
 
 // CHECK: Testing on source file
 // CHECK: internal (cc1) args are: -cc1
diff --git a/clang-tools-extra/clangd/tool/Check.cpp b/clang-tools-extra/clangd/tool/Check.cpp
--- a/clang-tools-extra/clangd/tool/Check.cpp
+++ b/clang-tools-extra/clangd/tool/Check.cpp
@@ -272,7 +272,10 @@
 
   auto ContextProvider = ClangdServer::createConfiguredContextProvider(
       Opts.ConfigProvider, nullptr);
-  WithContext Ctx(ContextProvider(""));
+  WithContext Ctx(ContextProvider(
+      FakeFile.empty()
+          ? File
+          : /*Don't turn on local configs for an arbitrary temp path.*/ ""));
   Checker C(File, Opts);
   if (!C.buildCommand(TFS) || !C.buildInvocation(TFS, Contents) ||
       !C.buildAST())