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com.sap.tc.useragent.UnsupportedUserAgentException: User Agent (Chrome, 52.0, unknown) is not supported! com.sap.tc.useragent.service.UserAgentServiceImpl

If you try to connect to a web page with this error (ussualy a SAP web server) maybe you are under Linux or you are not an IE fan. SAP use a list (like white list) with valid user agents and it's not always updated.
To solve it, install User-Agent Switcher for Chrome (if you are uing Chrome) and change your user agent to Windows Firefox 33.





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