Error "HTTP Error 500.31 – ANCM" when starting the WebModel
Applies to: viflow (subscription | 9 | 8 ) | Article: 1892328 | Updated on 05.04.2024
Situation
You are using the viflow subscription version (File – Help – About viflow: Version 36.5.XXXX) and get the error message HTTP Error 500.31 – ANCM Failed to Find Native Dependencies when calling the WebModel.
Possibly you have previously used viflow 8, with which this error did not occur.
Solution
Compared to the viflow 8 purchase version, the system requirements of the execution environment of the WebModel have been changed with viflow (subscription).
The Windows Hosting Bundle 6.0 is required for viflow (subscription) – if you previously used viflow 8 and the WebModel worked correctly, the Hosting Bundle version 3.1 is probably still installed.
Check the existing version of the Windows Hosting Bundle and, if necessary, install version 6.0 required for viflow (subscription).
System requirements for viflow
We have summarized all system requirements for the various viflow versions and information on downloading the Windows Hosting Bundle for Microsoft Internet Information Services (IIS) in the following article: ››› System requirements for viflow
Note for Azure WebApp
If the error message 500.31 still occurs despite the correct .NET version, make sure that it is a 64-bit platform.
For more info, see the article ›››' Operate viflow on Microsoft Azure.