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c# powerpoint interoperability: Failed Powerpoint automaion for smart art in office 19. works fine with ms office 16

When perform redaction on smart art object it gives below error:
ComEXception (0x80040155): Interface not registered
Failed to find proxy registration for IID: {}
at Microsoft.Office.Core.TextFrame2.get_TextRange()
It was working fine with ms office 2016. but, facing the above error in a machine with ms office 2019.
any suggestions?
Thanks!

Most probably there is a problem with windows registry keys for Office applications. I'd suggest repairing Office to recover the broken records in the windows registry. For example, you may find the following similar threads helpful:
.NET COMException Interface non registered
Interface not registered (Microsoft.Office.Interop.Outlook)

Error when initializing Microsoft Excel interop (64-bit)

I have a website using asp.net with Excel 2010 Interop 64-bit (Microsoft.Office.Interop.Excel.dll).
I deployed code to the Windows Server 64 bit.
By using command:
xelApp = new Microsoft.Office.Interop.Excel.Application();
I see there is no error on this own server.
But from the other computer (same domain), sometimes (not always), I got the error:
System.Runtime.InteropServices.COMException (0x8000401A): Retrieving the COM class factory for component with CLSID {00024500-0000-0000-C000-000000000046} failed due to the following error: 8000401a.
How could I fix this issue?
By install the Office 2010 64-bit to server 64-bit, I cannot see the Excel in DCOM config.
Please advise.
Thanks.

Check the folowing:
Is Microsoft Office Installed on the server? If not, you may install the MS Office and this feature should be working.
If you do not want to install the MS Office, you can use a similar tool, which is ClosedXML - 1 https://closedxml.codeplex.com/
I recommend to replace the Interop Excel with the ClosedXML.

That error code occurs due to security issues like insufficient privelage or due to incorrect username, password.

Vsto Word: After install, error: could not load assembly

I've made a vsto for word, that uses the dll : Microsoft.SharePoint.Client.Runtime.dll. The vsto runs perfect on my (dev) machine and then VS2013/rigtclick/properties/publish.
For the user's PC (Xp + office 2010, install the app) I get the error: could not load assembly Microsoft.SharePoint.Client.Runtime.dll.
How can I solve/bypass this error?
Thank you
p.S.This is my first VSTO, so newbie errors are highly propable

My guess would be that the client computer doesn't have the correct libraries installed. I doubt that having Office 2010 installed will give you the Microsoft.SharePoint.Client.Runtime dll.
You'll probably need the 'SharePoint Foundation 2010 Client Object Model Redistributable' installed on the client machine.
From the most voted answer in this thread:
Which SDK do I need to start using sharepoint.client.dll?

Excel Interop - Type not registered

I have an C# winform app compiled for x86 platform, using excel 2003 COM interop libraries. The Visual studio project references the following interop files for office 2003)
Microsoft.Office.Interop.Excel.dll (v 11.0.0, specific version = true)
Microsoft.Vbe.Interop.dll (v 11.0.0, specific version = false)
This application runs fine on most computers with excel 2003,2007 and 2010, but one of the users reported the exception below to me.
This users has windows 7 and Office 2010
System.InvalidCastException: Unable to cast COM object of type 'Microsoft.Office.Interop.Excel.ApplicationClass' to interface type 'Microsoft.Office.Interop.Excel._Application'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{000208D5-0000-0000-C000-000000000046}' failed due to the following error: Library not registered. (Exception from HRESULT: 0x8002801D (TYPE_E_LIBNOTREGISTERED)).
at Microsoft.Office.Interop.Excel.ApplicationClass.get_Workbooks()
From what I've read, this problem can occurs with conflicting versions of Office, but as I'm specifically referencing the 2003 Office PIAs and distributing them alongside the application, I'm unsure of what can cause the problem.
Thanks

The user's registry is broken. He has Office installed or you would have never been able to get the Aplication object created but it is missing an entry in the Typelib registry key. It is required to allow the interop call to succeed.
Reinstalling Office is the sane and simple solution. This kind of lossage is rarely isolated.

COM Exception 80040154 When creating an Excel Application

I'm trying to run my application on a server which does not and will not have Office installed on it.
using EXCEL = Microsoft.Office.Interop.Excel;
...
EXCEL.Application app = new EXCEL.Application();//Exception thrown here
The code is working fine on my own system, but on the server it gives the following exception:
Unhandled Exception: System.Runtime.InteropServices.COMException:
Retrieving the COM class factory for component with CLSID {...} failed
due to the following error: 80040154 Class not registered
(Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)).
both systems are 32bits, and I've copied the excel Interop dll next to application's exe. I've also installed O2010PIA.
any lead?

The Office Interop assemblies are runtime-callable wrappers (RCW) that allow you to interoperate with a copy of Office that's installed on the system via the COM API that it exposes.
The error message indicates that Excel isn't installed, exactly what I'd expect. You can't use the Interop assemblies on a machine without Office.

I'm trying to run my application on a server which does not and will
not have Office installed on it.
As Joe said, you'll need to install Excel for Interop to work. If you're dead-set against that, consider third-party alternatives. In general, Microsoft did not recommend installing Office on your server and using it with Interop - that being said, it will work (at least most of the time).