Base Page Status Code
1. Detailed Description of the Issue: 
The business URL https://wda26.jnj.com/nwa  was returning HTTP 502 (Bad Gateway) error and was not accessible to users. 
2. GxP Impact: 
No GxP impact identified at this time. 
3. Actions Taken: 
Verified the reported URL accessibility issue. 
Confirmed that the URL was unavailable during the reported timeframe. 
Cross-checked with ongoing infrastructure activities impacting the servers. 
4. Root Cause: 
The issue occurred due to planned OS patching activity on the backend servers, during which services were temporarily unavailable. 
5. Workaround: 
Post completion of OS patching, the servers were restarted. 
URL accessibility was validated after services were restored. 
6. Resolution: 
The URL was restored and is now functioning as expected after the restart of servers following OS patching. No further action required. 
7. Change Reference Details: 
System: EUROPE2-IS-BI-QA-A26 
Activity: OS Patching 
Start Time: 05/06/2026 12:00 
End Time: 05/06/2026 16:00 
Status During Activity: Unavailable (as expected) 
Change Request: CHG000011412576