Articles on: Troubleshooting & Support

Fix Error 503 when logging in

Overview: fix Error 503 on login


A 503 error during login can appear when CxPlanner security filters flag the request, or when browser tools block or alter the login. Any user can hit this. It is not usually wrong credentials.


  • Your role can be any CxPlanner user.
  • You can find the login page at https://app.cxplanner.com.
  • This restores login access for your user.


Any user role can encounter this error. No special role is required to resolve it.


How to fix Error 503 on login


  1. Try logging in from a different browser, for example Chrome, Firefox, or Edge.
  2. Temporarily turn off your password manager.
  3. Disable ad blockers for CxPlanner.
  4. Go to https://app.cxplanner.com, and try to sign in again.
  5. If the error continues, clear the browser cache, and retry.
  6. If it still fails, contact CxPlanner Support via chat, and include browser name, extensions, and whether a VPN is active.


Screenshot: login page where Error 503 can appear


Results: login restored


  • After the interfering tool is disabled, login proceeds normally
  • The error is not caused by wrong credentials alone


Troubleshooting: Error 503 on login


Problem

Cause

Solution

Still seeing 503 after disabling tools

Browser cached an old session

Clear browser cache and cookies for CxPlanner, then retry

Error after tools are off

Wrong email or password

Verify credentials, or use Forgotten password

Issue persists on all browsers

Network security settings or VPN

Try another network without VPN, then contact Support with network details

Updated on: 07/26/2026

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