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Common articles
Frequently Asked Questions
Installing Gateway Solver Updates
We use the same installer file to both install a new Gateway Solver install and to update an existing one to the newest release version. The URL to download our installer: https://download.evolvedsoftware.com/SetupGatewaySolver.exe A prompt to install…
Frequently Asked Questions
National Insurance Verification Request (NVR)
New in Gateway Solver Version 2.66 Find out how to check a National Insurance number if you’re an employer. If you want to find or check an employee’s National Insurance number, you can do so by…
How do I resolve this?
No active companies (CIS)
You're trying to file your monthly CIS300 submission or make subcontractor tax treatment verifications and you see this message; Not what you wanted to see... There are usually three reasons for this HM Revenue & Customs…
How do I resolve this?
Error 1046 Authentication Failure
You've tried filing a tax submission online and all you earned for your efforts is an "Authentication Failure". "Error 1046. The supplied user credentials failed validation for the requested service". This guide covers the most common…
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Knowledge base sections
Frequently Asked Questions
From the Gateway Solver user manual: who it is for, firewall rules, the command line, and the forms it files.
How do I resolve this?
Errors, confusing messages, return rejections, and submission failures, each with the fix that has worked before.
Announcements
Release notes and changes that affect every install.