# 105
source: https://developer.mastercard.com/open-finance-us/documentation/errors/error-codes/105/index.md

This error occurs when an existing connection to a financial institution is down and the end user may experience a failed attempt to add their bank accounts.​

|             Title             |                                                                                                                                                                                                                                                Details                                                                                                                                                                                                                                                 |
|-------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| **Error Code**                | 105                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| **Remediation Category**      | Retry Later                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
| **HTTP Status**               | 500                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| **Error Type**                | Institution Error                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
| **Data Connect Alert**        | We're unable to establish a connection to your financial institution. Try again or select another institution. (105)                                                                                                                                                                                                                                                                                                                                                                                   |
| **Error Message**             | Institution's website is unavailable or intermittently available. Please retry again and if the problem persists, contact client support.                                                                                                                                                                                                                                                                                                                                                              |
| **Common Causes**             | This error usually happens when the bank updates its website or server. These changes can disrupt the connection between your app and the bank, requiring changes/updates to restore the original connection.                                                                                                                                                                                                                                                                                          |
| **Troubleshooting Steps**     | Submit a [support ticket](https://developer.mastercard.com/open-finance-us/documentation/support/index.md#create-a-support-case-in-scm) for troubleshooting. ​Simultaneously, Data Connect display alerts will automatically prompt the end user when they are in session to take suggested remediation action associated with this error. ​Best Practice: Developers may prompt the end users to log into their application to ensure the end users can take recommended action to resolve the issue. |
| **Data Connect Fix Eligible** | No.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| **Retriable by End User**     | Yes, the end user will need to make 3-5 authentication attempts which will assist in the troubleshooting process. ​                                                                                                                                                                                                                                                                                                                                                                                    |
| **Access to Latest Data**     | You will be unable to access the latest data for this user's account until the end user resolves the issue.                                                                                                                                                                                                                                                                                                                                                                                            |

[Full Error List](https://developer.mastercard.com/open-finance-us/documentation/errors/error-list/index.md) \| [Institution Errors](https://developer.mastercard.com/open-finance-us/documentation/errors/institution-errors/index.md)