@gerdd Der OP bezieht sich auf Download-Probleme und es wird in diesem Thread auf diesen Thread verwiesen. Und dort ist sogar die Exception zum Thema Tag mismatch beim Download abgebildet:

javax.net.ssl.SSLException: Tag mismatch! at sun.security.ssl.Alert.createSSLException(Alert.java:133) ~[?:?] at sun.security.ssl.TransportContext.fatal(TransportContext.java:320) ~[?:?] at sun.security.ssl.TransportContext.fatal(TransportContext.java:263) ~[?:?] at sun.security.ssl.TransportContext.fatal(TransportContext.java:258) ~[?:?] at sun.security.ssl.SSLTransport.decode(SSLTransport.java:129) ~[?:?] at sun.security.ssl.SSLSocketImpl.decode(SSLSocketImpl.java:1183) ~[?:?] at sun.security.ssl.SSLSocketImpl.readApplicationRecord(SSLSocketImpl.java:1153) ~[?:?] at sun.security.ssl.SSLSocketImpl$AppInputStream.read(SSLSocketImpl.java:828) ~[?:?] at okio.InputStreamSource.read(Okio.kt:102) ~[MediathekView.jar:?] at okio.AsyncTimeout$source$1.read(AsyncTimeout.kt:159) ~[MediathekView.jar:?] at okio.RealBufferedSource.read(RealBufferedSource.kt:41) ~[MediathekView.jar:?] at okhttp3.internal.http1.Http1ExchangeCodec$AbstractSource.read(Http1ExchangeCodec.kt:352) ~[MediathekView.jar:?] at okhttp3.internal.http1.Http1ExchangeCodec$FixedLengthSource.read(Http1ExchangeCodec.kt:389) ~[MediathekView.jar:?] at okhttp3.internal.connection.Exchange$ResponseBodySource.read(Exchange.kt:279) ~[MediathekView.jar:?] at okio.RealBufferedSource$inputStream$1.read(RealBufferedSource.kt:438) ~[MediathekView.jar:?] at java.io.InputStream.read(InputStream.java:213) ~[?:?] at mediathek.controller.ThrottlingInputStream.read(ThrottlingInputStream.java:31) ~[MediathekView.jar:?] at mediathek.controller.MVBandwidthCountingInputStream.read(MVBandwidthCountingInputStream.java:45) ~[MediathekView.jar:?] at mediathek.controller.starter.DirectHttpDownload.downloadContent(DirectHttpDownload.java:191) ~[MediathekView.jar:?] at mediathek.controller.starter.DirectHttpDownload.run(DirectHttpDownload.java:299) [MediathekView.jar:?] Caused by: javax.crypto.AEADBadTagException: Tag mismatch! at com.sun.crypto.provider.GaloisCounterMode.decryptFinal(GaloisCounterMode.java:623) ~[?:?] at com.sun.crypto.provider.CipherCore.finalNoPadding(CipherCore.java:1116) ~[?:?] at com.sun.crypto.provider.CipherCore.fillOutputBuffer(CipherCore.java:1053) ~[?:?] at com.sun.crypto.provider.CipherCore.doFinal(CipherCore.java:941) ~[?:?] at com.sun.crypto.provider.AESCipher.engineDoFinal(AESCipher.java:491) ~[?:?] at javax.crypto.CipherSpi.bufferCrypt(CipherSpi.java:779) ~[?:?] at javax.crypto.CipherSpi.engineDoFinal(CipherSpi.java:730) ~[?:?] at javax.crypto.Cipher.doFinal(Cipher.java:2503) ~[?:?] at sun.security.ssl.SSLCipher$T12GcmReadCipherGenerator$GcmReadCipher.decrypt(SSLCipher.java:1639) ~[?:?] at sun.security.ssl.SSLSocketInputRecord.decodeInputRecord(SSLSocketInputRecord.java:262) ~[?:?] at sun.security.ssl.SSLSocketInputRecord.decode(SSLSocketInputRecord.java:190) ~[?:?] at sun.security.ssl.SSLTransport.decode(SSLTransport.java:108) ~[?:?] … 15 more

Was man hier ganz leicht erkennen kann sind die Schlagworte SSL, Crypto, javax.crypto.AEADBadTagException mit “Tag mismatch”.
Es hat immer noch nix mit XML, Mediathekview-Dateien etc zu tun. Und Tags findet man auch an ganz vielen anderen Stellen.