diff --git a/src/fs.h b/src/fs.h
--- a/src/fs.h
+++ b/src/fs.h
@@ -38,6 +38,8 @@
     void *hFile = (void *)-1;
 #endif
 };
+
+std::string get_filesystem_error_message(const fs::filesystem_error &e);
 }; // namespace fsbridge
 
 #endif // BITCOIN_FS_H
diff --git a/src/fs.cpp b/src/fs.cpp
--- a/src/fs.cpp
+++ b/src/fs.cpp
@@ -96,4 +96,22 @@
 }
 #endif
 
+std::string get_filesystem_error_message(const fs::filesystem_error &e) {
+#ifndef WIN32
+    return e.what();
+#else
+    // Convert from Multi Byte to utf-16
+    std::string mb_string(e.what());
+    int size = MultiByteToWideChar(CP_ACP, 0, mb_string.c_str(),
+                                   mb_string.size(), nullptr, 0);
+
+    std::wstring utf16_string(size, L'\0');
+    MultiByteToWideChar(CP_ACP, 0, mb_string.c_str(), mb_string.size(),
+                        &*utf16_string.begin(), size);
+    // Convert from utf-16 to utf-8
+    return std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>, wchar_t>()
+        .to_bytes(utf16_string);
+#endif
+}
+
 } // namespace fsbridge
diff --git a/src/rpc/protocol.cpp b/src/rpc/protocol.cpp
--- a/src/rpc/protocol.cpp
+++ b/src/rpc/protocol.cpp
@@ -132,7 +132,7 @@
         fs::remove(GetAuthCookieFile());
     } catch (const fs::filesystem_error &e) {
         LogPrintf("%s: Unable to remove random auth cookie file: %s\n",
-                  __func__, e.what());
+                  __func__, fsbridge::get_filesystem_error_message(e));
     }
 }
 
diff --git a/src/wallet/db.cpp b/src/wallet/db.cpp
--- a/src/wallet/db.cpp
+++ b/src/wallet/db.cpp
@@ -944,7 +944,8 @@
                     return true;
                 } catch (const fs::filesystem_error &e) {
                     LogPrintf("error copying %s to %s - %s\n", strFile,
-                              pathDest.string(), e.what());
+                              pathDest.string(),
+                              fsbridge::get_filesystem_error_message(e));
                     return false;
                 }
             }
diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -4345,8 +4345,9 @@
             return false;
         }
     } catch (const fs::filesystem_error &e) {
-        error_string = strprintf("Error loading wallet %s. %s",
-                                 location.GetName(), e.what());
+        error_string =
+            strprintf("Error loading wallet %s. %s", location.GetName(),
+                      fsbridge::get_filesystem_error_message(e));
         return false;
     }