A 502 Bad Gateway Error is a general indicator that there's something wrong with a website's server communication. Since this is just a generic error, it doesn't actually tell you the website's exact issue.
Sometimes a 502 error can be resolved relatively quickly. This might be just a blip and not a major error.
Before reporting this as an access issue, try this:
If the page is still giving you an error, try this:
This error is typically caused by communication issues between the server hosting the website and your device, possibly involving your internet service provider (ISP). A 504 Gateway error indicates an issue on the server-side rather than a problem with your network device or internet connection.
Occasionally, this error could be generated by client-side problems, so you can try these possible solutions:
This is a standard HTTP status code that’s indicative of a non-existing resource on the server.
Possible causes include:
Access Denied
This is generally an EZproxy issue. If you are not using EZproxy, look for a different troubleshooting option.
Possible reason(s): EZproxy is unable to connect to the resource.
the resource is temporarily unavailable. Wait a few minutes and try again in a different web browser.
your web browser is blocked (ie. firewall issue).
Possible solution:
Possible reason(s): Your Adobe Acrobat Reader is not up to date. Upgrading to the latest version will usually solve most common PDF loading/viewing problems.
How to find out: How to Check & Update Adobe Acrobat
If you are having trouble opening PDFs automatically in EBSCO (OneSearch), check the link below to verify the requirements listed:
When attempting to access resources from off-campus/off-location errors occur due to a browser blocking EZproxy's cookies. To fix this problem, you need to change your cookie settings in your browser:
Note: The Always allow, Accept third party cookies: Always, and Accept All Cookies will allow websites, third parties, and advertisers to store cookies and other data on your computer.
Reason: This problem is due to an error with the link to the e-journal.
Solution: Your EZprozy host must correct this issue. Report this issue.
Other considerations: If you are on campus or are using a VPN, you should be able to access the journal by clicking on the URL link provide in the error message.
Ovid Error Message: "An error occurred in the middleware while processing your request"
Solution: log into your OpenAthens account and then open the resource again.
Pop-up Blockers: A pop-up blocker is active and needs to be disabled.
Cache Needs Clearing: Your browser might need to have the cache cleared.Visit our troubleshooting page for help: Have Your Cleared Your Cache Lately?
Firewall conflict: A firewall is blocking the connection. Many businesses and Internet Service Providers (ISP) will place restrictions on their firewalls. Talk with your IT department or ISP to see if they are able to modify their firewall so that you can access the e-resource.
Resource not working: The individual e-resource may not be working. Try another resource from a different vendor. If you are able to access that resource, try the original resource again in a few minutes.
Redirect Blocker: The browser is using a redirect blocker. This will prevent e-resources from functioning correctly.
This is a vague response from a database site (ProQuest is famous for this one).
What to try: