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Evolved Software Help Center
Gateway Solver Knowledgebase

Gateway Solver Knowledgebase

Need help filing your tax returns online? Look no further than this section.

Frequently Asked Questions

Installing Gateway Solver Updates
National Insurance Verification Request (NVR)
Why can't I see my CIS300 return on the HMRC dashboard?
What HMRC forms/returns are supported?
Gateway Solver Command Line Options
Required Firewall Permissions

See all 7 articles

How do I resolve this?

Error 1046 Authentication Failure
No active companies (CIS)
Windows: Cannot access the specified device, path or file. You may not have the appropriate permissions to access the item.

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