diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5bb8f983c0..aa3098b333 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,6 +16,8 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 - fixed issue when re creating rambox junction
 - fixed Side logo cut-off in all wizards [#3227](https://github.com/sandboxie-plus/Sandboxie/issues/3227)
 - fixed Text cut-off in box creation wizard [#3226](https://github.com/sandboxie-plus/Sandboxie/issues/3226)
+- fixed windows 7 compatybility issue with ImBox.exe
+
 
 
 ## [1.11.0 / 5.66.0] - 2023-08-25
diff --git a/SandboxiePlus/version.h b/SandboxiePlus/version.h
index 046e2ae8a0..d370baf62b 100644
--- a/SandboxiePlus/version.h
+++ b/SandboxiePlus/version.h
@@ -3,7 +3,7 @@
 #define VERSION_MJR		1
 #define VERSION_MIN 	11
 #define VERSION_REV 	0
-#define VERSION_UPD 	3
+#define VERSION_UPD 	4
 
 #ifndef STR
 #define STR2(X) #X
diff --git a/SandboxieTools/ImBox/CryptoIO.cpp b/SandboxieTools/ImBox/CryptoIO.cpp
index f77977b652..2ea87b55d5 100644
--- a/SandboxieTools/ImBox/CryptoIO.cpp
+++ b/SandboxieTools/ImBox/CryptoIO.cpp
@@ -324,7 +324,8 @@ int CCryptoIO::BackupHeader(CAbstractIO* pIO, const std::wstring& Path)
 
 	HANDLE hFile = CreateFile(Path.c_str(), GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ, NULL, OPEN_ALWAYS, FILE_FLAG_NO_BUFFERING | FILE_FLAG_WRITE_THROUGH, NULL);
 	if (hFile != INVALID_HANDLE_VALUE) {
-		if (!WriteFile(hFile, header.ptr, sizeof(dc_header), NULL, NULL)) {
+		DWORD BytesWritten;
+		if (!WriteFile(hFile, header.ptr, sizeof(dc_header), &BytesWritten, NULL)) {
 			ret = ERR_FILE_NOT_OPENED;
 		}
 		CloseHandle(hFile);
@@ -349,7 +350,8 @@ int CCryptoIO::RestoreHeader(CAbstractIO* pIO, const std::wstring& Path)
 
 	HANDLE hFile = CreateFile(Path.c_str(), GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ, NULL, OPEN_ALWAYS, FILE_FLAG_NO_BUFFERING | FILE_FLAG_WRITE_THROUGH, NULL);
 	if (hFile != INVALID_HANDLE_VALUE) {
-		if (!ReadFile(hFile, header.ptr, sizeof(dc_header), NULL, NULL)) {
+		DWORD BytesRead;
+		if (!ReadFile(hFile, header.ptr, sizeof(dc_header), &BytesRead, NULL)) {
 			ret = ERR_FILE_NOT_OPENED;
 		}
 		CloseHandle(hFile);
diff --git a/SandboxieTools/ImBox/ImageFileIO.cpp b/SandboxieTools/ImBox/ImageFileIO.cpp
index ba1415bbc9..4cc5e25830 100644
--- a/SandboxieTools/ImBox/ImageFileIO.cpp
+++ b/SandboxieTools/ImBox/ImageFileIO.cpp
@@ -118,13 +118,15 @@ int CImageFileIO::Init()
 bool CImageFileIO::DiskWrite(void* buf, int size, __int64 offset)
 {
 	SetFilePointerEx(m->Handle, *(LARGE_INTEGER*)&offset, NULL, FILE_BEGIN);
-	return !!WriteFile(m->Handle, buf, size, NULL, NULL);
+    DWORD BytesWritten;
+	return !!WriteFile(m->Handle, buf, size, &BytesWritten, NULL);
 }
 
 bool CImageFileIO::DiskRead(void* buf, int size, __int64 offset)
 {
 	SetFilePointerEx(m->Handle, *(LARGE_INTEGER*)&offset, NULL, FILE_BEGIN);
-	return !!ReadFile(m->Handle, buf, size, NULL, NULL);
+    DWORD BytesRead;
+	return !!ReadFile(m->Handle, buf, size, &BytesRead, NULL);
 }
 
 void CImageFileIO::TrimProcess(DEVICE_DATA_SET_RANGE* range, int n)