Hi @Mail Lark ,
The Q&A forum is an English language forum and you will need to ask and respond in English.
According to the HTTP500 error you provided, you can refer to this document: https://learn.microsoft.com/en-us/connectivity-analyzer/exchange-activesync-returned-http-500-error?redirectedfrom=MSDN
Here is also a similar case you could refer to: https://serverfault.com/questions/810289/exchange-2016-account-will-not-perform-activesync-setup-but-no-connectivity
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