diff --git a/CHANGELOG.md b/CHANGELOG.md
index 85e2091..7fe0fd6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,7 @@ All notable changes to this project will be documented in this file.
 ### Fixed
 
 - Fixed Wazuh API validation ([#29](https://github.com/wazuh/wazuh-installation-assistant/pull/29))
+- Fixed token variable empty in Wazuh manager check ([#45](https://github.com/wazuh/wazuh-installation-assistant/pull/45))
 
 ## [4.9.1]
 
diff --git a/install_functions/manager.sh b/install_functions/manager.sh
index 862f76b..edc7bd5 100644
--- a/install_functions/manager.sh
+++ b/install_functions/manager.sh
@@ -44,7 +44,26 @@ function manager_startCluster() {
 
 function manager_checkService() {
     common_logger "Checking Wazuh API connection"
-    eval "TOKEN=$(curl -k -s -X POST -u "wazuh-wui:wazuh-wui" https://127.0.0.1:55000/security/user/authenticate/run_as?raw=true -d '{"user_name":"wzread"}' -H "content-type:application/json")"
+    token_command="curl -k -s -X POST -u \"wazuh-wui:wazuh-wui\" https://127.0.0.1:55000/security/user/authenticate/run_as?raw=true -d '{\"user_name\":\"wzread\"}' -H \"content-type:application/json\""
+    TOKEN=$(eval "${token_command}")
+    
+    max_attempts=5
+    attempt=0
+    seconds=3
+
+    while [[ -z "${TOKEN}" && "${attempt}" -lt "${max_attempts}" ]]; do
+        attempt=$((attempt+1))
+        common_logger "Attempt $attempt: Trying to get Wazuh API token"
+        sleep "${seconds}"
+        TOKEN=$(eval "${token_command}")
+    done
+
+    if [[ -z "${TOKEN}" ]]; then
+        common_logger -e "Failed to obtain Wazuh API token after $max_attempts attempts."
+        installCommon_rollBack
+        exit 1
+    fi
+
     wm_error=$(curl -k -s -X GET "https://127.0.0.1:55000/agents/outdated?pretty=true" -H "Authorization: Bearer ${TOKEN}")
 
     if  [[ ${wm_error,,} =~ '"error": 0' ]]; then