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Knowledge base
11 public articles covering installation, firewalls, error messages, and release notes, also published on the Zendesk help centre.
Frequently Asked Questions
From the Gateway Solver user manual: who it is for, firewall rules, the command line, and the forms it files.
- Installing Gateway Solver Updates Pinned
We use the same installer file to both install a new Gateway Solver install and to update an existing one to the…
- National Insurance Verification Request (NVR) Pinned
New in Gateway Solver Version 2.66 Find out how to check a National Insurance number if you’re an employer. If you want…
- Why can't I see my CIS300 return on the HMRC dashboard?
HM Revenue & Customs' portal (which shows your outstanding PAYE/NIC liabilities, as well as any previously filed CIS300 submissions and subcontractor tax…
- What HMRC forms/returns are supported?
Gateway Solver supports the following forms; Full Payment Submission (FPS) Earlier Year Update (EYU) Employer Alignment Submission (EAS) Employer Payment Summary (EPS)
- Gateway Solver Command Line Options
The settings within Gateway Solver can be overridden using the command line by stipulating the appropriate parameters at the time Gateway Solver…
- Required Firewall Permissions
Gateway Solver is an internet-enabled product which will require access past your corporate firewall to work as intended. It requires TLS support.
- Who is Gateway Solver for?
Gateway Solver is a software product which provides companies with a way to handle the online filing requirements of PAYE/RTI and CIS…
How do I resolve this?
Errors, confusing messages, return rejections, and submission failures, each with the fix that has worked before.
- Windows: Cannot access the specified device, path or file. You may not have the appropriate permissions to access the item.
When you attempt to launch Gateway Solver you receive the following message: It's not a Gateway Solver error but it might affect…
- No active companies (CIS) Pinned
You're trying to file your monthly CIS300 submission or make subcontractor tax treatment verifications and you see this message; Not what you…
- Error 1046 Authentication Failure Pinned
You've tried filing a tax submission online and all you earned for your efforts is an "Authentication Failure". "Error 1046. The supplied…
Announcements
Release notes and changes that affect every install.
- Gateway Solver Release Notes
Version 2.95 is a major release, and covers updates to the Gateway Solver API (GatewaySolverAPI.dll) client, the Gateway Solver Desktop application, the…
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