User: Peter is assigned role Cashier.

Login into POS with credentials: 
username: Peter
Password: 12

A message is displayed on the screen "Invalid User"

A detailed message is logged in the log table shown below:

Module: System.Web.ApplicationServices
LogMessage: You must specify a non-autogenerated machine key to store passwords in the encrypted format. Either specify a different passwordFormat, or change the machineKey configuration to use a non-autogenerated decryption key.

LogData: {"ClassName":"System.Configuration.Provider.ProviderException","Message":"You must specify a non-autogenerated machine key to store passwords in the encrypted format. Either specify a different passwordFormat, or change the machineKey configuration to use a non-autogenerated decryption key.","Data":null,"InnerException":null,"HelpURL":null,"StackTraceString":" at System.Web.Security.MembershipProvider.EncryptPassword(Byte[] password, MembershipPasswordCompatibilityMode legacyPasswordCompatibilityMode)\r\n at System.Web.Security.SqlMembershipProvider.EncodePassword(String pass, Int32 passwordFormat, String salt)\r\n at System.Web.Security.SqlMembershipProvider.CheckPassword(String username, String password, Boolean updateLastLoginActivityDate, Boolean failIfNotApproved, String& salt, Int32& passwordFormat)\r\n at System.Web.Security.SqlMembershipProvider.ValidateUser(String username, String password)\r\n at LT.LinkPOS.BLL.POSSecurityBLL.ValidateUser(String username, String password, String moduleName, String connectionString)","RemoteStackTraceString":null,"RemoteStackIndex":0,"ExceptionMethod":"8\nEncryptPassword\nSystem.Web.ApplicationServices, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35\nSystem.Web.Security.MembershipProvider\nByte[] EncryptPassword(Byte[], System.Web.Configuration.MembershipPasswordCompatibilityMode)","HResult":-2146233088,"Source":"System.Web.ApplicationServices","WatsonBuckets":null}

1. The following changes were made(Include Database object names, Program classes and any other relevant information):|

1. Changed user "reset password" to force HASHED encryption which is required for login to POS.
2. In this case, the administrator can reset user "peter" password. This user will then be able to login into POS.