diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 12b40e165..8bebbfe3e 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -55,8 +55,7 @@ jobs:
           openidm/startup.sh &
           timeout 3m bash -c 'until grep -q "OpenIDM ready" openidm/logs/openidm0.log.0 ; do sleep 5; done' || cat openidm/logs/openidm0.log.0
           grep -q "OpenIDM ready" openidm/logs/openidm0.log.0
-          ! grep "ERROR"  openidm/logs/openidm0.log.0
-          ! grep "SEVERE" openidm/logs/openidm0.log.0
+          ! grep -E "ERROR|SEVERE|Exception|Throwable" openidm/logs/openidm0.log.0
       - name: Test on Windows
         if: runner.os == 'Windows'
         run: |
@@ -66,8 +65,11 @@ jobs:
           Start-Sleep -s 180
           type logs\openidm0.log.0
           findstr "OpenIDM ready" logs\openidm0.log.0
-          type logs\openidm0.log.0 | find /c '"ERROR"'  | findstr "0"
-          type logs\openidm0.log.0 | find /c '"SEVERE"' | findstr "0"
+          if (Select-String -Path logs\openidm0.log.0 -Pattern 'ERROR|SEVERE|Exception|Throwable' -Quiet) {
+            Write-Host "Errors or exceptions detected in openidm0.log.0"
+            Select-String -Path logs\openidm0.log.0 -Pattern 'ERROR|SEVERE|Exception|Throwable'
+            exit 1
+          }
       - name: Upload failure artifacts
         uses: actions/upload-artifact@v7
         if: ${{ failure() }}
@@ -136,8 +138,7 @@ jobs:
           OPENIDM_OPTS="$OPTS" openidm/startup.sh $ARGS &
           timeout 3m bash -c 'until grep -q "OpenIDM ready" openidm/logs/openidm0.log.0 ; do sleep 5; done' || cat openidm/logs/openidm0.log.0
           grep -q "OpenIDM ready" openidm/logs/openidm0.log.0
-          ! grep "ERROR"  openidm/logs/openidm0.log.0
-          ! grep "SEVERE" openidm/logs/openidm0.log.0
+          ! grep -E "ERROR|SEVERE|Exception|Throwable" openidm/logs/openidm0.log.0
       - name: UI Smoke Tests (Playwright)
         run: |
           cd e2e
@@ -170,7 +171,23 @@ jobs:
             done
           else
             echo "openidm/logs directory not found"
+            exit 0
           fi
+          echo "----- Checking logs for errors/exceptions -----"
+          status=0
+          while IFS= read -r f; do
+            if grep -E -n "ERROR|SEVERE|Exception|Throwable" "$f" > /tmp/log_errors.$$ 2>/dev/null; then
+              echo "Found errors/exceptions in $f:"
+              cat /tmp/log_errors.$$
+              status=1
+            fi
+            rm -f /tmp/log_errors.$$
+          done < <(find openidm/logs -type f)
+          if [ "$status" -ne 0 ]; then
+            echo "Errors or exceptions detected in openidm logs"
+            exit 1
+          fi
+          echo "No errors or exceptions detected in openidm logs"
   build-docker:
     runs-on: 'ubuntu-latest'
     services: