diff --git a/commands/core/install.go b/commands/core/install.go
index a150e71be15..4ee03deabe0 100644
--- a/commands/core/install.go
+++ b/commands/core/install.go
@@ -49,13 +49,15 @@ func PlatformInstall(ctx context.Context, req *rpc.PlatformInstallRequest,
 		return nil, &arduino.PlatformNotFoundError{Platform: ref.String(), Cause: err}
 	}
 
-	err = installPlatform(pm, platform, tools, downloadCB, taskCB, req.GetSkipPostInstall())
+	didInstall, err := installPlatform(pm, platform, tools, downloadCB, taskCB, req.GetSkipPostInstall())
 	if err != nil {
 		return nil, err
 	}
 
-	if err := commands.Init(&rpc.InitRequest{Instance: req.Instance}, nil); err != nil {
-		return nil, err
+	if didInstall {
+		if err := commands.Init(&rpc.InitRequest{Instance: req.Instance}, nil); err != nil {
+			return nil, err
+		}
 	}
 
 	return &rpc.PlatformInstallResponse{}, nil
@@ -64,14 +66,14 @@ func PlatformInstall(ctx context.Context, req *rpc.PlatformInstallRequest,
 func installPlatform(pm *packagemanager.PackageManager,
 	platformRelease *cores.PlatformRelease, requiredTools []*cores.ToolRelease,
 	downloadCB rpc.DownloadProgressCB, taskCB rpc.TaskProgressCB,
-	skipPostInstall bool) error {
+	skipPostInstall bool) (bool, error) {
 	log := pm.Log.WithField("platform", platformRelease)
 
 	// Prerequisite checks before install
 	if platformRelease.IsInstalled() {
 		log.Warn("Platform already installed")
 		taskCB(&rpc.TaskProgress{Name: tr("Platform %s already installed", platformRelease), Completed: true})
-		return nil
+		return false, nil
 	}
 	toolsToInstall := []*cores.ToolRelease{}
 	for _, tool := range requiredTools {
@@ -87,18 +89,18 @@ func installPlatform(pm *packagemanager.PackageManager,
 	taskCB(&rpc.TaskProgress{Name: tr("Downloading packages")})
 	for _, tool := range toolsToInstall {
 		if err := downloadTool(pm, tool, downloadCB); err != nil {
-			return err
+			return false, err
 		}
 	}
 	if err := downloadPlatform(pm, platformRelease, downloadCB); err != nil {
-		return err
+		return false, err
 	}
 	taskCB(&rpc.TaskProgress{Completed: true})
 
 	// Install tools first
 	for _, tool := range toolsToInstall {
 		if err := commands.InstallToolRelease(pm, tool, taskCB); err != nil {
-			return err
+			return false, err
 		}
 	}
 
@@ -124,14 +126,14 @@ func installPlatform(pm *packagemanager.PackageManager,
 		var err error
 		_, installedTools, err = pm.FindPlatformReleaseDependencies(platformRef)
 		if err != nil {
-			return &arduino.NotFoundError{Message: tr("Can't find dependencies for platform %s", platformRef), Cause: err}
+			return false, &arduino.NotFoundError{Message: tr("Can't find dependencies for platform %s", platformRef), Cause: err}
 		}
 	}
 
 	// Install
 	if err := pm.InstallPlatform(platformRelease); err != nil {
 		log.WithError(err).Error("Cannot install platform")
-		return &arduino.FailedInstallError{Message: tr("Cannot install platform"), Cause: err}
+		return false, &arduino.FailedInstallError{Message: tr("Cannot install platform"), Cause: err}
 	}
 
 	// If upgrading remove previous release
@@ -149,7 +151,7 @@ func installPlatform(pm *packagemanager.PackageManager,
 				taskCB(&rpc.TaskProgress{Message: tr("Error rolling-back changes: %s", err)})
 			}
 
-			return &arduino.FailedInstallError{Message: tr("Cannot upgrade platform"), Cause: uninstallErr}
+			return false, &arduino.FailedInstallError{Message: tr("Cannot upgrade platform"), Cause: uninstallErr}
 		}
 
 		// Uninstall unused tools
@@ -175,5 +177,5 @@ func installPlatform(pm *packagemanager.PackageManager,
 
 	log.Info("Platform installed")
 	taskCB(&rpc.TaskProgress{Message: tr("Platform %s installed", platformRelease), Completed: true})
-	return nil
+	return true, nil
 }
diff --git a/commands/core/upgrade.go b/commands/core/upgrade.go
index 20c88e5707b..a0c391bfbb5 100644
--- a/commands/core/upgrade.go
+++ b/commands/core/upgrade.go
@@ -74,7 +74,7 @@ func upgradePlatform(pm *packagemanager.PackageManager, platformRef *packagemana
 	if err != nil {
 		return &arduino.PlatformNotFoundError{Platform: platformRef.String()}
 	}
-	if err := installPlatform(pm, platformRelease, tools, downloadCB, taskCB, skipPostInstall); err != nil {
+	if _, err := installPlatform(pm, platformRelease, tools, downloadCB, taskCB, skipPostInstall); err != nil {
 		return err
 	}
 
diff --git a/commands/lib/install.go b/commands/lib/install.go
index 205738e6f29..15d7f3a177f 100644
--- a/commands/lib/install.go
+++ b/commands/lib/install.go
@@ -64,6 +64,7 @@ func LibraryInstall(ctx context.Context, req *rpc.LibraryInstallRequest, downloa
 		}
 	}
 
+	didInstall := false
 	for _, lib := range toInstall {
 		libRelease, err := findLibraryIndexRelease(lm, &rpc.LibraryInstallRequest{
 			Name:    lib.Name,
@@ -78,13 +79,21 @@ func LibraryInstall(ctx context.Context, req *rpc.LibraryInstallRequest, downloa
 		}
 
 		if err := installLibrary(lm, libRelease, taskCB); err != nil {
-			return err
+			if errors.Is(err, librariesmanager.ErrAlreadyInstalled) {
+				continue
+			} else {
+				return err
+			}
 		}
+		didInstall = true
 	}
 
-	if err := commands.Init(&rpc.InitRequest{Instance: req.Instance}, nil); err != nil {
-		return err
+	if didInstall {
+		if err := commands.Init(&rpc.InitRequest{Instance: req.Instance}, nil); err != nil {
+			return err
+		}
 	}
+
 	return nil
 }
 
@@ -94,7 +103,7 @@ func installLibrary(lm *librariesmanager.LibrariesManager, libRelease *libraries
 	libPath, libReplaced, err := lm.InstallPrerequisiteCheck(libRelease)
 	if errors.Is(err, librariesmanager.ErrAlreadyInstalled) {
 		taskCB(&rpc.TaskProgress{Message: tr("Already installed %s", libRelease), Completed: true})
-		return nil
+		return err
 	}
 
 	if err != nil {
diff --git a/commands/lib/upgrade.go b/commands/lib/upgrade.go
index 41aef204265..c31897364f0 100644
--- a/commands/lib/upgrade.go
+++ b/commands/lib/upgrade.go
@@ -16,6 +16,8 @@
 package lib
 
 import (
+	"errors"
+
 	"github.com/arduino/arduino-cli/arduino"
 	"github.com/arduino/arduino-cli/arduino/libraries/librariesmanager"
 	"github.com/arduino/arduino-cli/commands"
@@ -65,7 +67,9 @@ func upgrade(lm *librariesmanager.LibrariesManager, libs []*installedLib, downlo
 	// Go through the list and install them
 	for _, lib := range libs {
 		if err := installLibrary(lm, lib.Available, taskCB); err != nil {
-			return err
+			if !errors.Is(err, librariesmanager.ErrAlreadyInstalled) {
+				return err
+			}
 		}
 	}