diff --git a/Source/mpqapi.cpp b/Source/mpqapi.cpp
index 246534e97..ded147b2b 100644
--- a/Source/mpqapi.cpp
+++ b/Source/mpqapi.cpp
@@ -15,21 +15,6 @@ _BLOCKENTRY *sgpBlockTbl;
 
 HANDLE sghArchive = INVALID_HANDLE_VALUE;
 
-BOOL mpqapi_set_hidden(const char *pszArchive, BOOL hidden)
-{
-	DWORD dwFileAttributes;
-	DWORD dwFileAttributesToSet;
-
-	dwFileAttributes = GetFileAttributes(pszArchive);
-	if (dwFileAttributes == INVALID_FILE_ATTRIBUTES)
-		return GetLastError() == ERROR_FILE_NOT_FOUND;
-	dwFileAttributesToSet = hidden ? FILE_ATTRIBUTE_SYSTEM | FILE_ATTRIBUTE_HIDDEN : 0;
-	if (dwFileAttributes == dwFileAttributesToSet)
-		return TRUE;
-	else
-		return SetFileAttributes(pszArchive, dwFileAttributesToSet);
-}
-
 void mpqapi_remove_hash_entry(const char *pszName)
 {
 	_HASHENTRY *pHashTbl;
@@ -324,7 +309,7 @@ BOOL mpqapi_has_file(const char *pszName)
 	return FetchHandle(pszName) != -1;
 }
 
-BOOL OpenMPQ(const char *pszArchive, BOOL hidden, DWORD dwChar)
+BOOL OpenMPQ(const char *pszArchive, DWORD dwChar)
 {
 	DWORD dwFlagsAndAttributes;
 	DWORD key;
@@ -332,13 +317,10 @@ BOOL OpenMPQ(const char *pszArchive, BOOL hidden, DWORD dwChar)
 	_FILEHEADER fhdr;
 
 	InitHash();
-	if (!mpqapi_set_hidden(pszArchive, hidden)) {
-		return FALSE;
-	}
 	dwFlagsAndAttributes = gbMaxPlayers > 1 ? FILE_FLAG_WRITE_THROUGH : 0;
 	sghArchive = CreateFile(pszArchive, GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, dwFlagsAndAttributes, NULL);
 	if (sghArchive == INVALID_HANDLE_VALUE) {
-		sghArchive = CreateFile(pszArchive, GENERIC_READ | GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, dwFlagsAndAttributes | (hidden ? FILE_ATTRIBUTE_SYSTEM | FILE_ATTRIBUTE_HIDDEN : 0), NULL);
+		sghArchive = CreateFile(pszArchive, GENERIC_READ | GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, dwFlagsAndAttributes, NULL);
 		if (sghArchive == INVALID_HANDLE_VALUE)
 			return FALSE;
 		save_archive_modified = TRUE;
diff --git a/Source/mpqapi.h b/Source/mpqapi.h
index aac00a8cc..9fe1fad57 100644
--- a/Source/mpqapi.h
+++ b/Source/mpqapi.h
@@ -6,7 +6,6 @@ extern char mpq_buf[4096];
 extern BOOL save_archive_modified;
 extern BOOLEAN save_archive_open;
 
-BOOL mpqapi_set_hidden(const char *pszArchive, BOOL hidden);
 void mpqapi_store_creation_time(const char *pszArchive, DWORD dwChar);
 BOOL mpqapi_reg_load_modification_time(char *dst, int size);
 void mpqapi_xor_buf(char *pbData);
@@ -24,7 +23,7 @@ BOOL mpqapi_write_file_contents(const char *pszName, const BYTE *pbData, DWORD d
 int mpqapi_find_free_block(int size, int *block_size);
 void mpqapi_rename(char *pszOld, char *pszNew);
 BOOL mpqapi_has_file(const char *pszName);
-BOOL OpenMPQ(const char *pszArchive, BOOL hidden, DWORD dwChar);
+BOOL OpenMPQ(const char *pszArchive, DWORD dwChar);
 BOOL ParseMPQHeader(_FILEHEADER *pHdr, DWORD *pdwNextFileStart);
 void CloseMPQ(const char *pszArchive, BOOL bFree, DWORD dwChar);
 void mpqapi_store_modified_time(const char *pszArchive, DWORD dwChar);
diff --git a/Source/pfile.cpp b/Source/pfile.cpp
index e8f4db189..530ea4ada 100644
--- a/Source/pfile.cpp
+++ b/Source/pfile.cpp
@@ -62,7 +62,7 @@ BOOL pfile_open_archive(BOOL update, DWORD save_num)
 	char FileName[MAX_PATH];
 
 	pfile_get_save_path(FileName, sizeof(FileName), save_num);
-	if (OpenMPQ(FileName, FALSE, save_num))
+	if (OpenMPQ(FileName, save_num))
 		return TRUE;
 
 	return FALSE;
diff --git a/SourceS/miniwin/misc.h b/SourceS/miniwin/misc.h
index 6ce382b8b..5a09a2ceb 100644
--- a/SourceS/miniwin/misc.h
+++ b/SourceS/miniwin/misc.h
@@ -176,9 +176,6 @@ typedef struct _LIST_ENTRY {
 
 DWORD GetTickCount();
 
-DWORD GetLastError();
-void SetLastError(DWORD dwErrCode);
-
 WINBOOL CloseHandle(HANDLE hObject);
 
 HANDLE CreateEventA(LPSECURITY_ATTRIBUTES lpEventAttributes, WINBOOL bManualReset, WINBOOL bInitialState,
@@ -319,8 +316,6 @@ WINBOOL WriteFile(HANDLE hFile, LPCVOID lpBuffer, DWORD nNumberOfBytesToWrite, L
     LPOVERLAPPED lpOverlapped);
 DWORD SetFilePointer(HANDLE hFile, LONG lDistanceToMove, PLONG lpDistanceToMoveHigh, DWORD dwMoveMethod);
 WINBOOL SetEndOfFile(HANDLE hFile);
-DWORD GetFileAttributesA(LPCSTR lpFileName);
-WINBOOL SetFileAttributesA(LPCSTR lpFileName, DWORD dwFileAttributes);
 HANDLE CreateFileA(LPCSTR lpFileName, DWORD dwDesiredAccess, DWORD dwShareMode,
     LPSECURITY_ATTRIBUTES lpSecurityAttributes, DWORD dwCreationDisposition,
     DWORD dwFlagsAndAttributes, HANDLE hTemplateFile);
@@ -435,7 +430,6 @@ constexpr auto DVL_GENERIC_WRITE = 0x40000000L;
 constexpr auto DVL_OPEN_EXISTING = 3;
 constexpr auto DVL_FILE_BEGIN = 0;
 constexpr auto DVL_FILE_CURRENT = 1;
-constexpr auto DVL_ERROR_FILE_NOT_FOUND = 2;
 
 constexpr auto DVL_WM_QUIT = 0x0012;
 constexpr auto DVL_INFINITE = 0xFFFFFFFF;
diff --git a/SourceS/miniwin/misc_macro.h b/SourceS/miniwin/misc_macro.h
index 240415abd..6d2c1f55d 100644
--- a/SourceS/miniwin/misc_macro.h
+++ b/SourceS/miniwin/misc_macro.h
@@ -49,13 +49,8 @@
 #define GENERIC_WRITE DVL_GENERIC_WRITE
 #define OPEN_EXISTING DVL_OPEN_EXISTING
 #define OPEN_ALWAYS 4
-#define ERROR_FILE_NOT_FOUND DVL_ERROR_FILE_NOT_FOUND
 #define ERROR_SUCCESS DVL_ERROR_SUCCESS
 #define FILE_ATTRIBUTE_NORMAL 128
-#define FILE_ATTRIBUTE_HIDDEN 0x00000002
-#define FILE_ATTRIBUTE_SYSTEM 0x00000004
-#define FILE_ATTRIBUTE_DIRECTORY 0x00000010
-#define FILE_SHARE_READ 1
 
 #define OFS_MAXPATHNAME DVL_OFS_MAXPATHNAME
 
@@ -92,8 +87,6 @@
 #define KEY_WRITE 0x20006
 #define REG_SZ 1
 
-#define GetFileAttributes GetFileAttributesA
-#define SetFileAttributes SetFileAttributesA
 #define CreateFile CreateFileA
 #define DeleteFile DeleteFileA
 
diff --git a/SourceX/miniwin/misc.cpp b/SourceX/miniwin/misc.cpp
index 6d4d7927e..1bc891f87 100644
--- a/SourceX/miniwin/misc.cpp
+++ b/SourceX/miniwin/misc.cpp
@@ -23,18 +23,6 @@
 
 namespace dvl {
 
-DWORD last_error;
-
-DWORD GetLastError()
-{
-	return last_error;
-}
-
-void SetLastError(DWORD dwErrCode)
-{
-	last_error = dwErrCode;
-}
-
 int wsprintfA(LPSTR dest, LPCSTR format, ...)
 {
 	va_list args;
diff --git a/SourceX/miniwin/misc_io.cpp b/SourceX/miniwin/misc_io.cpp
index d2449cdd5..28364a475 100644
--- a/SourceX/miniwin/misc_io.cpp
+++ b/SourceX/miniwin/misc_io.cpp
@@ -106,23 +106,6 @@ WINBOOL SetEndOfFile(HANDLE hFile)
 	return true;
 }
 
-DWORD GetFileAttributesA(LPCSTR lpFileName)
-{
-	char name[DVL_MAX_PATH];
-	TranslateFileName(name, sizeof(name), lpFileName);
-	std::ifstream filestream(name, std::ios::binary);
-	if (filestream.fail()) {
-		SetLastError(DVL_ERROR_FILE_NOT_FOUND);
-		return (DWORD)-1;
-	}
-	return 0x80;
-}
-
-WINBOOL SetFileAttributesA(LPCSTR lpFileName, DWORD dwFileAttributes)
-{
-	return true;
-}
-
 void ShowOutOfDiskError()
 {
 	char *text = "Failed to save, please free some disk space and try again.";
diff --git a/defs.h b/defs.h
index 789f6fd99..11c48d1b2 100644
--- a/defs.h
+++ b/defs.h
@@ -165,10 +165,6 @@
 
 #define ERR_DLG(title, text) ErrDlg(title, text, __FILE__, __LINE__)
 
-#ifndef INVALID_FILE_ATTRIBUTES
-#define INVALID_FILE_ATTRIBUTES ((DWORD)-1)
-#endif
-
 // To apply to certain functions which have local variables aligned by 1 for unknown yet reason
 #if (_MSC_VER == 1200)
 #define ALIGN_BY_1 __declspec(align(1))