---
title: AppEnhancer - Unable to load AE web pages due to SQL connectivity/certificate-related startup errors
description: In AE 25.4, may fail to load any AE web pages, including AE Admin. Initial troubleshooting may suggest an expired SSL certificate on IIS or SQL Server.
---

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# AppEnhancer - Unable to load AE web pages due to SQL connectivity/certificate-related startup errors

## In AE 25.4, may fail to load any AE web pages, including AE Admin. Initial troubleshooting may suggest an expired SSL certificate on IIS or SQL Server.

**Versions:**  
All Support Versions

**Verbose Errors:**  
[Microsoft.Data](http://microsoft.data/).SqlClient.SqlException (0x80131904): A connection was successfully established with the server, but then an error occurred during the login process. (provider: SSL Provider, error: 0 - The received certificate has expired.) ---\> System.ComponentModel.Win32Exception (0x80004005): The received certificate has expired

AXEngine Initialized failed. Error Code = DBCfgLoadFailed.

XtenderSolutions.Configuration.ConnectionAuthenticationFailed: A connection was successfully established with the server, but then an error occurred during the login process. (provider: SSL Provider, error: 0 - The received certificate has expired.) ---\>

**Resolution:**  
Initial troubleshooting may suggest an expired SSL certificate on IIS or SQL Server. However, in this case, restarting related SQL and IIS services resolved the issue. The issue could also be resolved by rebooting the SQL Server, which cleared stale cached certificate and permission entries. 

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