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Jun 03, 2020 at 11:14 AM

Backwards compatibility SP26

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We developed an application build with CRforVS13SP13 and deployed it to customers/clients with the same version runtime CRruntime13SP13. So no problems.

Now some customers need to upgrade to a higher version runtime 13SP26 and we do not want them to redirect the changed version numbering of SP26 in their config-files. So we decided to upgrade our Visual Studio development environment and rebuild the application with the higher version CRforVS13SP26. And this works correctly with the customers/clients with the SP26-runtime.

We expected this would still be compatible with customers/clients that continue with the old SP13, but there we see errors now. Is there no backwards compatibility in SP26 and do we now need to upgrade all other customers/clients to runtime SP26 also?