diff --git a/rhodecode/lib/vcs/backends/base.py b/rhodecode/lib/vcs/backends/base.py
--- a/rhodecode/lib/vcs/backends/base.py
+++ b/rhodecode/lib/vcs/backends/base.py
@@ -203,6 +203,14 @@ class BaseRepository(object):
     def __ne__(self, other):
         return not self.__eq__(other)
 
+    @classmethod
+    def get_default_config(cls, default=None):
+        config = Config()
+        if default and isinstance(default, list):
+            for section, key, val in default:
+                config.set(section, key, val)
+        return config
+
     @LazyProperty
     def EMPTY_COMMIT(self):
         return EmptyCommit(self.EMPTY_COMMIT_ID)
diff --git a/rhodecode/lib/vcs/backends/git/repository.py b/rhodecode/lib/vcs/backends/git/repository.py
--- a/rhodecode/lib/vcs/backends/git/repository.py
+++ b/rhodecode/lib/vcs/backends/git/repository.py
@@ -62,7 +62,7 @@ class GitRepository(BaseRepository):
                  update_after_clone=False, with_wire=None, bare=False):
 
         self.path = safe_str(os.path.abspath(repo_path))
-        self.config = config if config else Config()
+        self.config = config if config else self.get_default_config()
         self._remote = connection.Git(
             self.path, self.config, with_wire=with_wire)
 
diff --git a/rhodecode/lib/vcs/backends/hg/repository.py b/rhodecode/lib/vcs/backends/hg/repository.py
--- a/rhodecode/lib/vcs/backends/hg/repository.py
+++ b/rhodecode/lib/vcs/backends/hg/repository.py
@@ -72,8 +72,14 @@ class MercurialRepository(BaseRepository
         :param update_after_clone=False: sets update of working copy after
            making a clone
         """
+
         self.path = safe_str(os.path.abspath(repo_path))
-        self.config = config if config else Config()
+        # mercurial since 4.4.X requires certain configuration to be present
+        # because sometimes we init the repos with config we need to meet
+        # special requirements
+        self.config = config if config else self.get_default_config(
+            default=[('extensions', 'largefiles', '1')])
+
         self._remote = connection.Hg(
             self.path, self.config, with_wire=with_wire)
 
diff --git a/rhodecode/lib/vcs/backends/svn/repository.py b/rhodecode/lib/vcs/backends/svn/repository.py
--- a/rhodecode/lib/vcs/backends/svn/repository.py
+++ b/rhodecode/lib/vcs/backends/svn/repository.py
@@ -71,7 +71,7 @@ class SubversionRepository(base.BaseRepo
     def __init__(self, repo_path, config=None, create=False, src_url=None,
                  **kwargs):
         self.path = safe_str(os.path.abspath(repo_path))
-        self.config = config if config else base.Config()
+        self.config = config if config else self.get_default_config()
         self._remote = connection.Svn(
             self.path, self.config)