diff --git a/src/MANYBODY/pair_polymorphic.cpp b/src/MANYBODY/pair_polymorphic.cpp
index f12d369e0d..ce476e1204 100644
--- a/src/MANYBODY/pair_polymorphic.cpp
+++ b/src/MANYBODY/pair_polymorphic.cpp
@@ -593,7 +593,7 @@ void PairPolymorphic::read_file(char *file)
 
         if ((ng == 0) || (nr == 0) || (nx == 0))
           error->one(FLERR,"Error reading potential file header");
-      } catch (TokenizerException &e) {
+      } catch (TokenizerException &) {
         error->one(FLERR,"Potential file incompatible with this pair style version");
       }
 
diff --git a/src/MOLECULE/angle_table.cpp b/src/MOLECULE/angle_table.cpp
index 4299e375f1..a5ba07b779 100644
--- a/src/MOLECULE/angle_table.cpp
+++ b/src/MOLECULE/angle_table.cpp
@@ -412,7 +412,7 @@ void AngleTable::read_table(Table *tb, char *file, char *keyword)
       tb->afile[i] = values.next_double();
       tb->efile[i] = values.next_double();
       tb->ffile[i] = values.next_double();
-    } catch (TokenizerException &e) {
+    } catch (TokenizerException &) {
       ++cerror;
     }
   }
diff --git a/src/MOLECULE/bond_table.cpp b/src/MOLECULE/bond_table.cpp
index 5637dfa699..db1314c76f 100644
--- a/src/MOLECULE/bond_table.cpp
+++ b/src/MOLECULE/bond_table.cpp
@@ -340,7 +340,7 @@ void BondTable::read_table(Table *tb, char *file, char *keyword)
       tb->rfile[i] = values.next_double();
       tb->efile[i] = values.next_double();
       tb->ffile[i] = values.next_double();
-    } catch (TokenizerException &e) {
+    } catch (TokenizerException &) {
       ++cerror;
     }
 
diff --git a/src/error.cpp b/src/error.cpp
index 9811a1d3eb..5338f41cca 100644
--- a/src/error.cpp
+++ b/src/error.cpp
@@ -58,7 +58,8 @@ void Error::universe_all(const std::string &file, int line, const std::string &s
   std::string mesg = "ERROR: " + str;
   try {
     mesg += fmt::format(" ({}:{})\n",truncpath(file),line);
-  } catch (fmt::format_error &e) {
+  } catch (fmt::format_error &) {
+    ; // do nothing
   }
   if (universe->me == 0) {
     if (universe->uscreen)  fputs(mesg.c_str(),universe->uscreen);
@@ -147,9 +148,9 @@ void Error::all(const std::string &file, int line, const std::string &str)
     std::string mesg = "ERROR: " + str;
     if (input && input->line) lastcmd = input->line;
     try {
-      mesg += fmt::format(" ({}:{})\nLast command: {}\n",
-                          truncpath(file),line,lastcmd);
-    } catch (fmt::format_error &e) {
+      mesg += fmt::format(" ({}:{})\nLast command: {}\n", truncpath(file),line,lastcmd);
+    } catch (fmt::format_error &) {
+      ; // do nothing
     }
     utils::logmesg(lmp,mesg);
   }
diff --git a/src/pair_table.cpp b/src/pair_table.cpp
index 60272b5276..7b77a847f1 100644
--- a/src/pair_table.cpp
+++ b/src/pair_table.cpp
@@ -407,7 +407,7 @@ void PairTable::read_table(Table *tb, char *file, char *keyword)
       rfile = values.next_double();
       tb->efile[i] = conversion_factor * values.next_double();
       tb->ffile[i] = conversion_factor * values.next_double();
-    } catch (TokenizerException &e) {
+    } catch (TokenizerException &) {
       ++cerror;
     }
 
diff --git a/src/utils.cpp b/src/utils.cpp
index d67284822c..d87eb3784b 100644
--- a/src/utils.cpp
+++ b/src/utils.cpp
@@ -1172,7 +1172,7 @@ double utils::timespec2seconds(const std::string &timespec)
       if (!values.has_next()) break;
       vals[i] = values.next_int();
     }
-  } catch (TokenizerException &e) {
+  } catch (TokenizerException &) {
     return -1.0;
   }
 
diff --git a/tools/msi2lmp/src/SearchAndFill.c b/tools/msi2lmp/src/SearchAndFill.c
index 1a85ee111f..ff05ff13d0 100644
--- a/tools/msi2lmp/src/SearchAndFill.c
+++ b/tools/msi2lmp/src/SearchAndFill.c
@@ -13,6 +13,10 @@
 #include <string.h>
 #include <ctype.h>
 
+#if defined(_WIN32)
+#define strdup(x) _strdup(x)
+#endif
+
 static int blank_line(char *line)
 {
   while (*line != '\0') {