Quick tip: 502 errors in an Application Gateway in Microsoft Azure

This humble author was recently finishing up a couple of articles and scripts before calling it a day and heading home. Then, all of a sudden, an Application Gateway started presenting 502 error pages. Looking at the metrics in the Application Gateway, we noticed no data during the time reported by the customer.

After looking at the Application Gateway, we realized that the instance count was configured as one and after a call with Microsoft support, we were informed that there was maintenance at that time that caused the outage in the Application Gateway -- and the 502 errors.

Long story short, to avoid an outage make sure that you have at least two instances in any production environment.

Featured image: Pexels

Anderson Patricio

Anderson Patricio is a Canadian MVP in Cloud and Datacenter Management, and Office Server and Services, besides of the Microsoft Award he also holds a Solutions Master (MCSM) in Exchange, CISSP and several other certifications. Anderson contributes to the Microsoft Community with articles, tutorials, blog posts, twitter, forums and book reviews. He is a regular contributor here at Techgenix.com, MSExchange.org, ITPROCentral.com and Anderson Patricio.org (Portuguese).

Published by
Anderson Patricio

Recent Posts

RAID 1 vs. RAID 5: When to use each level and why

Redundant array of independent disks (RAID) is the logical grouping of two or more disks…

17 hours ago

Microsoft 365 adds online scheduling to Microsoft Bookings app

Microsoft 365 users have access to an app called Microsoft Bookings. Before you dismiss it…

22 hours ago

Biometrics authentication: Where the technology is now — and where it’s going

As cyberthreats rise in number and complexity, biometrics authentication technology has seen rapid adoption and…

4 days ago

Remote work vulnerabilities: Tips on avoiding a nightmare scenario

Remote work is likely to remain permanent — and so will the vulnerabilities it brings…

4 days ago

Microsoft Teams rolls out new video meetings features

Microsoft Teams is adding new features to help employees adjust to the new normal of…

5 days ago

Azure Charts: If you’re not using this cool feature, you should be

This Azure Quick Tip shows you how to use Azure Charts, a great resource that…

5 days ago