Due to this tag <machinekey validationkey="autogenerate" /> in web.config in ASP.NET project, signalr is not working why ?

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ASP.NET

signalr connection is blocked by <machinekey />tag.

What I have tried:

if i remove this tag then it works fine.

Posted 2-May-17 23:12pm

sundar sahukhala

Updated 3-May-17 0:09am

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Wessel Beulink · Answer 1 · 2017-05-03T00:09:00

Machinkey is used to isolate your application from other applications on the same server. It's more security against vulnerability's. If you have a validationKey you also need a decryptionKey. So your tag is not complete. It should look like this:

<machineKey  
validationKey="21F090935F6E49C2C797F69BBAAD8402ABD2EE0B667A8B44EA7DD4374267A75D7
               AD972A119482D15A4127461DB1DC347C1A63AE5F1CCFAACFF1B72A7F0A281B"           
decryptionKey="ABAA84D7EC4BB56D75D217CECFFB9628809BDB8BF91CFCD64568A145BE59719F"
validation="SHA1"
decryption="AES"
/>

This msd article will answer all you questions.