WinCC OA VIDEO has been using "Security by Default" since 3.17. The feature sets (including licenses) that do not come from the video server are ignored since vimaccOA 2.2.7.2 to prevent manipulation. Accordingly, since vimaccOA Release 2.2.7.6, the WinCC OA servers must also be configured as feature/license providers explicitly via configuration on the video server in the file vimacc/config/AccVimaccConfig.conf.
Please make the following addition to the AccVimaccConfig.conf on the vimacc config servers:
[ConfigServer]
AllowedFeatureProviders="<OA-Server1>,<OA-Server2>,<Config-Server1>,<Config-Server2>"
The quotation marks are also important!
Likewise, in all vimacc conf files, all host names must always be written in lower case.