HTTP troubleshooting
405 Method Not Allowed
Your uptime monitor detected that the server recognizes the request method but refuses to allow it for this specific URL. For example, your monitor might be sending a GET request to a link that only accepts a POST payload.
What 405 Status Code Means
- 1.
Verb compatibility clash
The endpoint is configured to handle specific actions and completely rejects the type of request sent.
- 2.
API path mismatch
The web address points to a functional script, but the server expects a write command instead of a read ping.
- 3.
Uptime monitor behavior
Our monitor flags this error because the server blocked data flow due to an incorrect request method configuration.
Troubleshooting checklist
- 1.
Review the Allow header
Check the server response to see the Allow header, which lists the exact methods you are permitted to use.
- 2.
Inspect monitor configurations
Look at your uptime monitor dashboard settings to check if it is using GET, POST, or HEAD requests.
- 3.
Check backend route files
Review your application code routing files to see which HTTP verbs are assigned to this specific path.
- 4.
Examine proxy rule blocks
Verify that cloud firewalls or intermediate routers are not changing the HTTP method down the line.
How to Fix It
- 1.
Match the monitor method
Change the HTTP request method inside your uptime monitor settings to match what the endpoint requires.
- 2.
Update application routes
Adjust your backend controller code to accept incoming GET pings if you want the path public.
- 3.
Correct proxy verb rules
Fix proxy settings if an intermediate gateway is blocking or converting custom HTTP methods by mistake.
- 4.
Separate API functionalities
Create a distinct, lightweight status endpoint that explicitly responds to simple monitoring GET requests.
After the Service is Fixed
- 1.
Verify with Uptime Monitor
Confirm the monitoring dashboard turns green once the request method matches the endpoint rules.
- 2.
Test with command strings
Run a custom cURL check changing verbs to ensure the endpoint answers correctly to each assigned method.
- 3.
Audit application log trees
Check your system errors to ensure real visitors are not hitting 405 blocks on your core public pages.
- 4.
Document API access lists
Maintain a clear list of what actions are permitted on each endpoint to prevent future method confusion.