There is bug when Exchange 2019 CU15 gets installed - General Questions

RE: There is bug when Exchange 2019 CU15 gets installed

pmour — Fri, 28 Mar 2025 17:19:35 +0000

Ok an update that MADE IT WORK:

The change or deletion of the 3 Dlls must be done on TWO places

C:\SolidCP\Enterprise Server\bin

AND

C:\SolidCP\Server asp.net v4.5\bin

RE: There is bug when Exchange 2019 CU15 gets installed

pmour — Fri, 28 Mar 2025 16:59:14 +0000

just an update on my case

tried reapplying the ver 1.5.1 and of course there was the same problem.

Added the 3 new DLLs from exchange folder as have been described (or deleted alltogether from solidcp folder, same thing) and there are still problems

For example trying to edit the password policy there is this error

Client found response content type of 'text/html; charset=utf-8', but expected 'text/xml'.

Stack Trace:

System.Web.Services.Protocols.SoapException: System.Web.Services.Protocols.SoapException: Server was unable to process request. ---> System.Exception: Error executing 'UPDATE_PASSWORD_SETTINGS' task on '' ORGANIZATION ---> System.InvalidOperationException: Client found response content type of 'text/html; charset=utf-8', but expected 'text/xml'.
The request failed with the error message:
--

Server Error in '/' Application.

Could not load file or assembly 'Microsoft.Bcl.AsyncInterfaces' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)

RE: There is bug when Exchange 2019 CU15 gets installed

jtruitt — Thu, 27 Mar 2025 15:11:09 +0000

@trobinson There were also Windows updates following as part of a standard patch cycle, so it's possible.

Windows updates applied were 2025-03 Cumulative Update for Windows Server 2019 (KB5053596) and 2025-01 Cumulative Update for .NET Framework 3.5, 4.7.2 and 4.8 for Windows Server 2019 (KB5050182)

RE: There is bug when Exchange 2019 CU15 gets installed

jtruitt — Thu, 27 Mar 2025 15:06:18 +0000

@pmour Im on the latest version available and the problem remains the same. The workaround with the DLLs resolves it.

RE: There is bug when Exchange 2019 CU15 gets installed

Trevor Robinson — Thu, 27 Mar 2025 14:59:27 +0000

I have installed CU15 on another server in production and found no issues after the install completed. SolidCP loaded with no errors... I dont see a problem with making the changes to the latest dlls but it doesnt look like it should be a issue.

Maybe its another update like if you did OS updates at the same time?

Regards,

Trevor

RE: There is bug when Exchange 2019 CU15 gets installed

pmour — Wed, 26 Mar 2025 16:53:41 +0000

correction i mean upgrade Solidcp so it uses the new libraries.

ie ver 1.5.2 or what it will be

RE: There is bug when Exchange 2019 CU15 gets installed

pmour — Wed, 26 Mar 2025 13:31:25 +0000

That is what i described exactly on my initial post. Solution is to upgrade Solidcp to latest version

RE: There is bug when Exchange 2019 CU15 gets installed

jtruitt — Wed, 26 Mar 2025 00:53:03 +0000

Ultimately I landed on this as the workaround for now

- Update SolidCP Server running on managed Exchange 2019 CU15 server(s) to 1.5.1 (in cases where it was not)
- Added .old extension to these three DLLs in the SolidCP Server installation's bin directory for every managed node

System.Text.Json.dll

System.Text.Encodings.Web.dll

Microsoft.Bcl.AsyncInterfaces.dll

- Restarted the SolidCP Server website in IIS

RE: There is bug when Exchange 2019 CU15 gets installed

jtruitt — Tue, 25 Mar 2025 23:25:28 +0000

Well, I managed to stop getting errors by replacing the following DLLs in the bin folder of the SolidCP Server (i.e. the "client" running on the managed Exchange 2019 Server.") with the exact same file versions present in the bin folder of Exchange.

System.Text.Json.dll

System.Text.Encodings.Web.dll

Microsoft.Bcl.AsyncInterfaces.dll

SolidCP Server seemed to be running versions 7.0.0, and Exchange is running 8.0.0. The errors have ceased, and I can successfully access mailbox size information, change passwords, check distribution list members, etc.

RE: There is bug when Exchange 2019 CU15 gets installed

jtruitt — Tue, 25 Mar 2025 16:44:23 +0000

And the Stack Trace

System.Reflection.RuntimeAssembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks) +0
System.Reflection.RuntimeAssembly.InternalLoadAssemblyName(AssemblyName assemblyRef, Evidence assemblySecurity, RuntimeAssembly reqAssembly, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks) +232
System.Reflection.RuntimeAssembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean forIntrospection) +113
System.Reflection.RuntimeAssembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection) +23
System.Reflection.Assembly.Load(String assemblyString) +35
System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String assemblyName, Boolean starDirective) +49

System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String assemblyName, Boolean starDirective) +762
System.Web.Configuration.CompilationSection.LoadAllAssembliesFromAppDomainBinDirectory() +259
System.Web.Configuration.CompilationSection.LoadAssembly(AssemblyInfo ai) +167
System.Web.Compilation.BuildManager.GetReferencedAssemblies(CompilationSection compConfig) +238
System.Web.Compilation.BuildManager.GetPreStartInitMethodsFromReferencedAssemblies() +78
System.Web.Compilation.BuildManager.CallPreStartInitMethods(String preStartInitListPath, Boolean& isRefAssemblyLoaded) +334
System.Web.Compilation.BuildManager.ExecutePreAppStart() +178
System.Web.Hosting.HostingEnvironment.Initialize(ApplicationManager appManager, IApplicationHost appHost, IConfigMapPathFactory configMapPathFactory, HostingEnvironmentParameters hostingParameters, PolicyLevel policyLevel, Exception appDomainCreationException) +746

System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +552
System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +122
System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +737