I’m having trouble with a PHP application that connects to Google Drive’s editor feature. Whenever I attempt to authorize the app, it fails to permit necessary access. Instead of presenting the usual authorization screen for approval, the app just redirects me back to the authentication page repeatedly.
I’ve spent hours on this issue without success in identifying the cause of the redirect loop. The OAuth process starts properly, but an error seems to occur during the permission granting stage.
Has anyone faced a similar authentication problem? What might be causing the app to keep redirecting instead of finalizing the authorization? Are there any troubleshooting methods or configuration adjustments I should consider trying?
The redirect loop you’re encountering is likely due to mismatched redirect URIs in your Google Cloud project setup. Ensure that the redirect URI configured in your OAuth client precisely matches the URI your application is using, paying attention to details like protocol and any trailing slashes. Additionally, issues with session management can corrupt the state parameter during the OAuth process, leading to this looping behavior. Verify your PHP session handling is intact and that the state parameter is being validated effectively. It’s also important to confirm that the scopes requested align with the permissions necessary for Google Drive editor access, as insufficient permissions can create similar redirect issues.
check your client credentials too - sometimes the client secret gets mixed up or expires. also make sure cookies are enabled in your browser, oauth flows need them to work properly. had this exact issue last month and it was just a typo in my redirect url configuration.
I encountered this exact problem when implementing Google Drive API integration six months ago. The issue turned out to be browser-specific caching of authorization tokens that were already expired or corrupted. Clear your browser cache completely and try using an incognito window to test the authorization flow. Another common culprit is having debug mode enabled in your PHP application which can interfere with the OAuth callback handling. Check your error logs during the redirect process - there might be PHP warnings or notices that are disrupting the flow even if they’re not visible on screen. Also verify that your server’s system clock is synchronized properly, as timestamp mismatches can cause OAuth validation failures that manifest as redirect loops.