diff --git a/requirements.txt b/requirements.txt
index 3e77fe9..9096ec7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 Flask==3.0.0
 Flask-Session==0.6.0
-PyMuPDF==1.23.7
 Werkzeug==3.0.1
 waitress==3.0.0
 requests-oauthlib==2.0.0
-python-dotenv==1.2.1
\ No newline at end of file
+python-dotenv==1.2.1
+# PyMuPDF==1.23.7  # Optional - will be installed separately if possible
\ No newline at end of file
diff --git a/ubuntu-install.sh b/ubuntu-install.sh
index 6707952..e78d1cd 100644
--- a/ubuntu-install.sh
+++ b/ubuntu-install.sh
@@ -96,6 +96,15 @@ log_info "Installing Python dependencies..."
 pip install --upgrade pip
 pip install -r requirements.txt
 
+# Try to install PyMuPDF (optional for PDF processing)
+log_info "Attempting to install PyMuPDF for PDF processing..."
+if pip install PyMuPDF==1.23.7; then
+    log_success "PyMuPDF installed successfully"
+else
+    log_warning "PyMuPDF installation failed - PDF processing will not be available"
+    log_warning "You can try installing it manually later with: pip install PyMuPDF"
+fi
+
 # Create .env file with Azure AD configuration
 log_info "Configuring Azure AD authentication..."
 echo ""
@@ -321,6 +330,7 @@ Type=simple
 User=$USER
 WorkingDirectory=$APP_DIR
 Environment=PATH=$APP_DIR/venv/bin
+Environment=PYTHONPATH=$APP_DIR
 ExecStart=$APP_DIR/venv/bin/python $APP_DIR/app.py
 Restart=always
 RestartSec=5
@@ -446,6 +456,6 @@ echo "  Update app:      ./manage.sh update"
 echo "=================================================================="
 
 # Check if .env needs configuration
-if grep -q "your-tenant-id-here" .env; then
-    log_warning "IMPORTANT: Configure your .env file before using the application!"
+if [[ -z "$AZURE_TENANT_ID" || -z "$AZURE_CLIENT_ID" || -z "$AZURE_CLIENT_SECRET" ]]; then
+    log_warning "IMPORTANT: Azure AD configuration is incomplete. Please check your .env file!"
 fi
\ No newline at end of file