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Troubleshoot MTO Error Messages

MTO error messages are used to inform system users that MTO stopped working at a particular point. Regardless of the type of error message received, the reason for the error is the same - MTO has lost connection with Treasury's servers. MTO connection loss can occur for a variety of reasons, the root cause can be on Treasury's side or the user's side.

Error Code Types

MILogin & Common Error Codes

Certain error codes are not specific to one area of MTO. Learn more about common error codes related to this Treasury web service.

Common Error Codes

Registration Services

These services allow an MTO user to interact with business tax accounts. Learn more about error codes that appear when starting or managing your business.

Registration Services Error Codes

Tax Services

These services allow an MTO user to interact with Essential Services Assessment (ESA), Flow-through Entity (FTE) Tax, Marihuana Retailer Excise (MRE) Tax, Medical Marihuana Facilities (MMF) Tax, as well as Sales, Use, and Withholding (SUW) Taxes. Learn more about error codes that appear when interacting with these tax types on behalf of your business.

Tax Services Error Codes

Guest Services

These services allow MTO users to send returns, payments, and other information to Treasury and serve as an electronic equivalent of mail while maintaining security. Learn more about error codes relating to bulk e-file, fast file, fast pay, streamlined sales, and EFW2 upload.

Guest Services Error Codes

Troubleshooting MTO Error Messages

If you repeatedly receive an MTO error message, complete all of the following steps. Be sure to reattempt your MTO transaction after each step:

  • Verify you are using an MTO supported web browser: Chrome, Edge, Firefox, Safari
  • Log out of the MTO session and exit the browser completely
  • Shutdown computer and restart
  • Clear browser cache
  • Switch web browsers and/or computers if possible

If you continue to receive the error message after completing the steps referenced above, please contact the Treasury Customer Service Center during normal business hours (Monday - Friday, 8:00 am - 4:30 pm EST):

  • ESA: 517-241-0310
  • Registration and SUW: 517-636-6925