diff --git a/CommonInstall/util_init.pl b/CommonInstall/util_init.pl
index 650bc7f..25c505b 100755
--- a/CommonInstall/util_init.pl
+++ b/CommonInstall/util_init.pl
@@ -211,7 +211,7 @@ sub os_vendor_version($)
 		chop($rval);
 		$rval="ES".$rval;
 		if ( -e "/etc/redhat-release" ) {
-			if (!system("grep -qi centos /etc/redhat-release") || !system("grep -qi rocky /etc/redhat-release") || !system("grep -qi almalinux /etc/redhat-release") || !system("grep -qi circle /etc/redhat-release")) {
+			if (!system("grep -qi centos /etc/redhat-release") || !system("grep -qi rocky /etc/redhat-release") || !system("grep -qi almalinux /etc/redhat-release") || !system("grep -qi circle /etc/redhat-release") || !system("grep -qi msvsphere /etc/redhat-release")) {
 				$rval = `cat /etc/redhat-release | cut -d' ' -f4`;
 				$rval =~ m/(\d+).(\d+)/;
 				if ($2 eq "0") {
@@ -258,6 +258,12 @@ sub os_vendor_version($)
 			$rval = `cat /etc/redhat-release`;
 			$rval =~ m/(\d+).(\d+)/;
 			$rval="ES".$1.$2;
+		} elsif (!system("grep -qi msvsphere /etc/redhat-release")) {
+			# Find a number of the form "#.#" and output the portion
+			# to the left of the decimal point.
+			$rval = `cat /etc/redhat-release`;
+			$rval =~ m/(\d+).(\d+)/;
+			$rval="ES".$1.$2;
 		} elsif (!system("grep -qi circle /etc/redhat-release")) {
 			# Find a number of the form "#.#" and output the portion
 			# to the left of the decimal point.
@@ -321,6 +327,8 @@ sub determine_os_version()
 		$CUR_DISTRO_VENDOR = "redhat";
 	} elsif ( -s "/etc/almalinux-release" ) {
 		$CUR_DISTRO_VENDOR = "redhat";
+	} elsif ( -s "/etc/sphere-release" ) {
+		$CUR_DISTRO_VENDOR = "redhat";
 	} elsif ( -s "/etc/circle-releas" ) {
 		$CUR_DISTRO_VENDOR = "redhat";
 	} elsif ( -s "/etc/UnitedLinux-release" ) {
@@ -342,6 +350,7 @@ sub determine_os_version()
 			"centos" => "redhat",
 			"rocky" => "redhat",
 			"almalinux" => "redhat",
+			"msvsphere" => "redhat",
 			"circle" => "redhat",
 			"sles" => "SuSE",
 			"sle_hpc" => "SuSE"
@@ -351,6 +360,7 @@ sub determine_os_version()
 			"centos" => $NETWORK_CONF_DIR,
 			"rocky" => $NETWORK_CONF_DIR,
 			"almalinux" => $NETWORK_CONF_DIR,
+			"msvsphere" => $NETWORK_CONF_DIR,
 			"circle" => $NETWORK_CONF_DIR,
 			"sles" => "/etc/sysconfig/network",
 			"sle_hpc" => "/etc/sysconfig/network"
@@ -385,6 +395,8 @@ sub determine_os_version()
 			$CUR_DISTRO_VENDOR = "redhat";
 		} elsif ($CUR_DISTRO_VENDOR eq "almalinux") {
 			$CUR_DISTRO_VENDOR = "redhat";
+		} elsif ($CUR_DISTRO_VENDOR eq "msvsphere") {
+			$CUR_DISTRO_VENDOR = "redhat";
 		} elsif ($CUR_DISTRO_VENDOR eq "circle") {
 			$CUR_DISTRO_VENDOR = "redhat";
 		}
diff --git a/MakeTools/funcs-ext.sh b/MakeTools/funcs-ext.sh
index 8457db0..36a37cc 100755
--- a/MakeTools/funcs-ext.sh
+++ b/MakeTools/funcs-ext.sh
@@ -731,6 +731,9 @@ function os_vendor()
             almalinux)
                 rval=redhat
                 ;;
+            msvsphere)
+                rval=redhat
+                ;;
             circle)
                 rval=redhat
                 ;;
@@ -769,6 +772,9 @@ function os_vendor()
 		then
 			rval=redhat
 		elif [ $rval = 'almalinux' ]
+		then
+			rval=redhat
+		elif [ $rval = 'msvsphere' ]
 		then
 			rval=redhat
 		elif [ $rval = 'circle' ]
@@ -856,6 +862,10 @@ function os_vendor_version()
 		then
 			# AlmaLinux
 			rval="ES"`cat /etc/redhat-release | sed -r 's/^.+([[:digit:]])\.([[:digit:]]).+$/\1\2/'`
+		elif grep -qi msvsphere /etc/redhat-release
+		then
+			# MSVSphere
+			rval="ES"`cat /etc/redhat-release | sed -r 's/^.+([[:digit:]])\.([[:digit:]]).+$/\1\2/'`
 		elif grep -qi circle /etc/redhat-release
 		then
 			# Circle Linux
diff --git a/OpenIb_Host/update_mpi_spec.sh b/OpenIb_Host/update_mpi_spec.sh
index a3bf2ba..8fedffb 100755
--- a/OpenIb_Host/update_mpi_spec.sh
+++ b/OpenIb_Host/update_mpi_spec.sh
@@ -33,7 +33,7 @@
 id=$(./get_id_and_versionid.sh | cut -f1 -d' ')
 versionid=$(./get_id_and_versionid.sh | cut -f2 -d' ')
 
-if [ "$id" = "rhel" -o "$id" = "centos" -o "$id" = "rocky" -o "$id" = "almalinux" -o "$id" = "circle" ]
+if [ "$id" = "rhel" -o "$id" = "centos" -o "$id" = "rocky" -o "$id" = "almalinux" -o "$id" = "msvsphere" -o "$id" = "circle" ]
 then
 	GE_8_0=$(echo "$versionid >= 8.0" | bc)
 	sed -i "s/__RPM_REQ/Requires: openblas-devel/" mpi-apps.spec
diff --git a/get_id_and_versionid.sh b/get_id_and_versionid.sh
index deaeb43..d89ac76 100755
--- a/get_id_and_versionid.sh
+++ b/get_id_and_versionid.sh
@@ -33,6 +33,9 @@ else
 			then
 				rval=redhat
 			elif [ $rval = 'almalinux' ]
+			then
+				rval=redhat
+			elif [ $rval = 'msvsphere' ]
 			then
 				rval=redhat
 			elif [ $rval = 'circle' ]
@@ -84,6 +87,10 @@ else
 		then
 			# AlmaLinux
 			rval=`cat /etc/redhat-release | sed -r 's/^.+([[:digit:]])\.([[:digit:]]).+$/\1.\2/'`
+		elif grep -qi msvsphere /etc/redhat-release
+		then
+			# MSVSphere
+			rval=`cat /etc/redhat-release | sed -r 's/^.+([[:digit:]])\.([[:digit:]]).+$/\1.\2/'`
 		elif grep -qi circle /etc/redhat-release
 		then
 			# Circle Linux
diff --git a/update_eth_spec.sh b/update_eth_spec.sh
index 9551461..196daeb 100755
--- a/update_eth_spec.sh
+++ b/update_eth_spec.sh
@@ -48,7 +48,7 @@ fi
 
 source ./OpenIb_Host/ff_filegroups.sh
 
-if [ "$id" = "rhel" -o "$id" = "centos" -o "$id" = "rocky" -o "$id" = "almalinux" -o "$id" = "circle" ]
+if [ "$id" = "rhel" -o "$id" = "centos" -o "$id" = "rocky" -o "$id" = "almalinux" -o "$id" = "msvsphere" -o "$id" = "circle" ]
 then
 	# __RPM_REQ_BASIC -
 	sed -i "s/__RPM_REQ_BASIC1/expect%{?_isa}, tcl%{?_isa}, libibverbs-utils%{?_isa}, librdmacm-utils%{?_isa}, net-snmp%{?_isa}, net-snmp-utils%{?_isa}/g" eth-tools.spec