CODEWITHSUNDEEP
reporting-servicesmachinekey
G. Nick
G. Nick

Reputation: 21

SSRS 2017 machineKey deleted on restart

I've implemented the solution from here (with the 2017 equivalents from comments) but i've hit a roadblock and i'm not able to find a solution. The '<'machineKey'>' tag from web.config and from rsportal.exe.config are deleted after restart . Because of that (i think) after i log in i get a 500 Internal server error. I've searched the logs and found this error :

Throwing Microsoft.ReportingServices.Diagnostics.Utilities.UnhandledHttpApplicationException: , Microsoft.ReportingServices.Diagnostics.Utilities.UnhandledHttpApplicationException: The report server encountered an unhandled exception in HttpApplication. ---> System.Web.HttpException: Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that machineKey configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster.

I've set the machineKey tag in RSPortal.exe.config , web.config and in rsreportserver.config .I've tried deleting the encryption key's and restarting it and it did not help. Any ideea how to fix this or what is causing it ?

Upvotes: 2

Views: 2045

Answers (2)

Sinish Gopi
Sinish Gopi

Reputation: 41

I had the same issue, it is related to the format. Please use the below format

<MachineKey 
ValidationKey="BE4663BB11C14E8C7C1DB0A48022D517CB668C65A46174B0C4CFF4D9B7CE2498EA998C4E5A8C15EE5262D5C297479349B2A9783700AB3C1C891B914D12691A0D" 
DecryptionKey="7121FD4D52F0035DBBB113B9E449ED4467CA01DDD26684FF" 
Validation="SHA1" 
Decryption="AES"/>

Upvotes: 4

etwina
etwina

Reputation: 71

it happened to me as well and was resolved by adding the machine key to rsreportserver.config inside Configuration section right after Dsn element in the following case: MachineKey

enter image description here

Upvotes: 3

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