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🔍 "Interface Not Supported" When Creating Returns

This guide shows you how to change certain SureFire .dll files so they run with Full Trust, which can resolve the "Interface Not Supported" message.

⚠️ Before You Begin

You will need administrative access to set these security/trust settings.

Step 1: Close SureFire and open Control Panel

1. Close SureFire.
2. Click the Start button, point to Settings, and then click Control Panel.
3. Double-click Administrative Tools.

Step 2: Open the Trust an Assembly wizard

1. Double-click Microsoft .Net Framework 1.1 Wizards.
2. Choose Trust an Assembly.
3. Select Make changes to this computer, and then click Next.
4. Click Browse.

Step 3: Trust the required DLL files

1. Navigate to the X:\UTSxx folder (where X: is the drive Sure-Fire is installed on, and xx corresponds to the tax year of your program).
2. Select the UniversalTaxSystems.UTS.Interop.dll file, and then click Open.
3. Click Next.
4. Move the slider bar to Full Trust, and then click Next.
5. Click Finish.

Repeat steps 5-12, instead of selecting UniversalTaxSystems.Diagnostics.Tax.dll in step 9.

Step 4: If the issue continues

If this does not correct the problem, contact Customer Service at 800-516-9442.

📞 Still Need Help?

If you are having trouble, contact our support team:

Phone: 1-800-516-9442

Or submit a support ticket