Unable to logon on DVS

Hello,

Since yesterday, we are facing an issue related to DVS. We are using RDM with DVS and domain users, and we are not able anymore to logon.

Could not login to Devolutiosn Server. Please contact your adminstrator

We have same issue with Web interface

Invalid username or password, please verify your credentials

From Devolutions Server Console, we can find in logs

NullReferenceException - Object reference not set to an instance of an object.

   at Devolutions.Server.Managers.AuthenticationProvider.c6abf2976f5ee429161f32b990376723e(String c18973cea236a9feff75c32ca7d1697d5, DirectoryServicesQueryParameter cd859b08da59abe612143bd1559182965, DomainUserInfo& c841b1c446db6d14b169ef87727530897)
   at Devolutions.Server.Managers.AuthenticationProvider.c5fa41ed89806a14f70ba47bcd658244b(String c18973cea236a9feff75c32ca7d1697d5, String ceb81d1ee93f91e0bc57f34876c263863, LoginContext cb5a4c71efae3912bd8aed2dde627d1b7)
   at Devolutions.Server.Managers.AuthenticationProvider.ccb5d54bb7412f649e06ef2f91538a4c3(LoginContext c429b900f2a0a537c51b5f3e4907d17e0, UserEntity c716c2cbe219a55916f49fe5eb3353a84, String ceb81d1ee93f91e0bc57f34876c263863)
   at Devolutions.Server.Managers.AuthenticationProvider.c6a3d3bcd6f6af2379e8d0b7090fb2a90(LoginContext c429b900f2a0a537c51b5f3e4907d17e0, String c4c707ece3170514f8504b161d5b38c17, String ceb81d1ee93f91e0bc57f34876c263863, UserData c97dd860f76cceff6ed4f50b4e576c9f5)
   at Devolutions.Server.Managers.AuthenticationProvider.c6a3d3bcd6f6af2379e8d0b7090fb2a90(LoginContext c429b900f2a0a537c51b5f3e4907d17e0, String c4c707ece3170514f8504b161d5b38c17, String ceb81d1ee93f91e0bc57f34876c263863)
   at Devolutions.Server.Managers.AuthenticationProvider.c8bb708df64dc216e27e1f168e0c6d047(LoginContext c429b900f2a0a537c51b5f3e4907d17e0, String c18973cea236a9feff75c32ca7d1697d5, String ceb81d1ee93f91e0bc57f34876c263863)
   at Devolutions.Server.Managers.AuthenticationProvider.c62978af3e387055c84b1a634f447c1a3(LoginContext c429b900f2a0a537c51b5f3e4907d17e0, String c18973cea236a9feff75c32ca7d1697d5, String ceb81d1ee93f91e0bc57f34876c263863)
   at Devolutions.Server.Managers.AuthenticationProvider.ValidateUser(LoginContext loginData, String username, String password)
   at Devolutions.Server.Controllers.APIControllers.V2.BackendApiController.cfd5a34f5d07fc88d4e80bd65d54ea43c(SessionContext c7f73d40d473700e7f67b5ed4acf6d298, c212e3a08cc20d79ebaee7b52f680bcac c4d2fa07e082de4d2f4134a3ab5cf1bed)

In RDM with Performance Profiling, and level 121; we have

RefreshUserSecurityContext : 0 ms
Remote: DoLogin...
Remote:     FindUser(userName) : 6 ms
Remote:     AuthenticationProvider.ValidateUser...
Remote:         AuthenticateUser...
Remote:             DoValidateUserAgainstDomain...
Remote:                 ProcessDomainUserInfo : 23 ms
Remote:             DoValidateUserAgainstDomain : 45 ms
Remote:         AuthenticateUser : 45 ms
Remote:     AuthenticationProvider.ValidateUser : 45 ms
Remote: DoLogin : 75 ms
Remote: DoLogin...
Remote:     FindUser(userName) : 0 ms
Remote:     AuthenticationProvider.ValidateUser...
Remote:         AuthenticateUser...
Remote:             DoValidateUserAgainstDomain...
Remote:                 ProcessDomainUserInfo : 24 ms
Remote:             DoValidateUserAgainstDomain : 41 ms
Remote:         AuthenticateUser : 41 ms
Remote:     AuthenticationProvider.ValidateUser : 41 ms
Remote: DoLogin : 56 ms
Silent: Devolutions.RemoteDesk

In SQL DB, in table LoginAttempt, we have


And in LogMessage table, we have:


DVLS version: 2021.1.10.0
RDM version: Enterprise 2021.2.15.0
Same issue with Windows or MacOS

Do you have any idea regarding this problem ?

My point of view is we have an issue between DVLS and our Active Directory. But we didn't make any changes regarding DVLS or AD configuration
DVLS & AD are in same subnet, so there is no Firewall issue
How can I check Domain settings in the SQL DB ? As we don't have any access to the Web Interface..