diff --git a/rust/agama-manager/src/service.rs b/rust/agama-manager/src/service.rs
index 3be84f361e..d5fa8ab86f 100644
--- a/rust/agama-manager/src/service.rs
+++ b/rust/agama-manager/src/service.rs
@@ -85,6 +85,8 @@ pub enum Error {
     Hardware(#[from] hardware::Error),
     #[error("Cannot dispatch this action in {current} stage (expected {expected}).")]
     UnexpectedStage { current: Stage, expected: Stage },
+    #[error("Cannot start the installation. The config contains some issues.")]
+    InstallationBlocked,
     #[error(transparent)]
     Users(#[from] users::service::Error),
 }
@@ -686,6 +688,13 @@ impl MessageHandler<message::GetLicense> for Service {
 impl MessageHandler<message::RunAction> for Service {
     /// It runs the given action.
     async fn handle(&mut self, message: message::RunAction) -> Result<(), Error> {
+        let issues = self.issues.call(issue::message::Get).await?;
+        let progress = self.progress.call(progress::message::GetProgress).await?;
+
+        if !issues.is_empty() || !progress.is_empty() {
+            return Err(Error::InstallationBlocked);
+        }
+
         match message.action {
             Action::ConfigureL10n(config) => {
                 self.check_stage(Stage::Configuring).await?;
diff --git a/rust/agama-server/src/server/web.rs b/rust/agama-server/src/server/web.rs
index d5c3883b05..8365fdc9e0 100644
--- a/rust/agama-server/src/server/web.rs
+++ b/rust/agama-server/src/server/web.rs
@@ -22,6 +22,7 @@
 
 use crate::server::config_schema;
 use agama_lib::{error::ServiceError, logs};
+use agama_manager::service::Error::InstallationBlocked;
 use agama_manager::{self as manager, message};
 use agama_software::Resolvable;
 use agama_utils::{
@@ -66,7 +67,12 @@ impl IntoResponse for Error {
         let body = json!({
             "error": self.to_string()
         });
-        (StatusCode::BAD_REQUEST, Json(body)).into_response()
+        let status = if matches!(self, Error::Manager(InstallationBlocked)) {
+            StatusCode::UNPROCESSABLE_ENTITY
+        } else {
+            StatusCode::BAD_REQUEST
+        };
+        (status, Json(body)).into_response()
     }
 }
 
@@ -398,7 +404,8 @@ async fn get_license(
     context_path = "/api/v2",
     responses(
         (status = 200, description = "Action successfully run."),
-        (status = 400, description = "Not possible to run the action.", body = Object)
+        (status = 400, description = "Not possible to run the action.", body = Object),
+        (status = 422, description = "Action blocked by backend state", body = Object)
     ),
     params(
         ("action" = Action, description = "Description of the action to run."),