& Sign of Death: Synology Secure SignIn URL/QR Code Problem

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& Sign of Death: Synology Secure SignIn URL/QR Code Problem

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The link created by DSM7 behind the QR code is followed by an & sign after the top-level domain (TLD):


Due to this & sign directly after the TLD, the traffic is not forwarded to the server. Not a single data packet arrives at the firewall if you scan the URL via the Synology Secure SignIn app or call it directly in a web browser. The data packets are not sent because the & character results in a DNS error: Cloud not resolve host

This can be easily traced on the mobile phone and notebook using CURL. When you reproduce the error, keep the special characters in mind: curl not taking my "&" sign in URL

The manufacturer must modify the generation of the URL. The error has already been reported to Synology via the "Report bug" button in DSM7.


NAS Support
DS1520+, DS218+, DS215j
  1. RT2600ac
  2. MR2200ac
Operating system
  1. macOS
Mobile operating system
  1. iOS
Haven't seen a 'domain&variable=value' structure before. Normally should be 'domain/script?var1=val1&var2=val2&...'.

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