diff --git a/embedserv/source/inprocserv/dllentry.cxx b/embedserv/source/inprocserv/dllentry.cxx
index 4cc8ebdc6024..4b430336d7e5 100644
--- a/embedserv/source/inprocserv/dllentry.cxx
+++ b/embedserv/source/inprocserv/dllentry.cxx
@@ -71,7 +71,7 @@ namespace {
                     pos += suffix.copy(pos, suffix.size());
                     assert(pos == end - 1);
                     *pos = 0;
-                    if (ERROR_SUCCESS == RegSetValueExW(HKEY_LOCAL_MACHINE, pSubKey, 0, REG_SZ, reinterpret_cast<const BYTE*>(pLibrary), nLen*sizeof(wchar_t)))
+                    if (ERROR_SUCCESS == RegSetKeyValueW(HKEY_LOCAL_MACHINE, pSubKey, nullptr, REG_SZ, pLibrary, nLen*sizeof(wchar_t)))
                         bLocalSuccess = true;
                 }
 
diff --git a/shell/source/win32/shlxthandler/util/registry.cxx b/shell/source/win32/shlxthandler/util/registry.cxx
index 5e4f73797606..209eb399c923 100644
--- a/shell/source/win32/shlxthandler/util/registry.cxx
+++ b/shell/source/win32/shlxthandler/util/registry.cxx
@@ -30,7 +30,7 @@
 
 bool SetRegistryKey(HKEY RootKey, const Filepath_char_t* KeyName, const Filepath_char_t* ValueName, const Filepath_char_t* Value)
 {
-    int rc = RegSetKeyValueW(RootKey, KeyName, ValueName, REG_SZ, reinterpret_cast<LPCVOID>(Value),
+    int rc = RegSetKeyValueW(RootKey, KeyName, ValueName, REG_SZ, Value,
                              (wcslen(Value) + 1) * sizeof(*Value));
     return (ERROR_SUCCESS == rc);
 }
@@ -59,7 +59,7 @@ bool QueryRegistryKey(HKEY RootKey, const Filepath_char_t* KeyName, const Filepa
 {
     DWORD dwBytes = dwBufLen * sizeof(*pszData);
     LSTATUS rc = RegGetValueW(RootKey, KeyName, ValueName, RRF_RT_REG_SZ, nullptr,
-                              reinterpret_cast<LPBYTE>(pszData), &dwBytes);
+                              pszData, &dwBytes);
     return (ERROR_SUCCESS == rc);
 }
 
diff --git a/vcl/win/window/salframe.cxx b/vcl/win/window/salframe.cxx
index ebcb85f55cff..1661d3408fa8 100644
--- a/vcl/win/window/salframe.cxx
+++ b/vcl/win/window/salframe.cxx
@@ -2656,7 +2656,7 @@ void WinSalFrame::UpdateSettings( AllSettings& rSettings )
         wchar_t aValueBuf[10];
         DWORD   nValueSize = sizeof( aValueBuf );
         if (RegGetValueW(HKEY_CURRENT_USER, L"Control Panel\\Desktop", L"MenuShowDelay",
-                         RRF_RT_REG_SZ, nullptr, reinterpret_cast<LPVOID>(aValueBuf), &nValueSize)
+                         RRF_RT_REG_SZ, nullptr, aValueBuf, &nValueSize)
             == ERROR_SUCCESS)
         {
             aMouseSettings.SetMenuDelay( static_cast<sal_uLong>(ImplW2I( aValueBuf )) );
@@ -2947,7 +2947,7 @@ void WinSalFrame::UpdateSettings( AllSettings& rSettings )
         DWORD   nValueSize = sizeof( aValueBuf );
         if (RegGetValueW(HKEY_CURRENT_USER,
                          L"Control Panel\\International\\Calendars\\TwoDigitYearMax", L"1",
-                         RRF_RT_REG_SZ, nullptr, reinterpret_cast<LPVOID>(aValueBuf), &nValueSize)
+                         RRF_RT_REG_SZ, nullptr, aValueBuf, &nValueSize)
             == ERROR_SUCCESS)
         {
             DWORD nValue = static_cast<sal_uLong>(ImplW2I(aValueBuf));