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DPR-ERR-2079 Firewall Security Rejection. Your request was rejected by the security firewall.

Troubleshooting


Problem

In a multi-server or multi-installation environment, an error is returned in the browser when attempting any of the following in Cognos Connection [

  • Adding a user to a role
  • Opening report studio
  • Running any report
]

Symptom

Browser:
DPR-ERR-2079 Firewall Security Rejection. Your request was rejected by the security firewall.
Please try again or contact your administrator.

CRNserver.log:

ERROR: Cannot set header. Response already committed.</messageString></message><message><messageString>ERROR: Cannot set header.
Response already committed.
DPR-DPR-1035 Dispatcher detected an error.

Excerpt of error in crnserver.log generated on adding a user to a role:

Request error - Invalid sub-variable: name => addentries_list
Request error - Invalid sub-variable: encoded value => Request ...
Request error - signature verification failed
Request error - Invalid HMAC or signed data, CAFH or CAFA, CAFS prefix not found: string => H4sIAAAA
Request error - Validation fails for request: request => ifrmcmd=save&search_list=&addentries_showusers

Excerpt of error in crnserver.log generated on opening QS:

Request error - Missing context ID: context => QS
Request error - Validation fails for request: request => b_action=xts.run&m=/qs/submit.xts

Excerpt of error in browser when importing a deployment:

"The deployment archive is empty. Click OK to continue the import or Cancel to return to your selection."
PRS-TRS-0902 The "XSLT" tramsform instruction encountered an error while processing the source at location " transforms/CM/post-process.xslt"

Excerpt of error in crnserver.log when importing a deployment:

Request error - signature verification failed
Request error - Invalid HMAC or signed data, CAFH or CAFA, CAFS prefix not found: string => H4sIAAAA

[{"Product":{"code":"SSEP7J","label":"Cognos Business Intelligence"},"Business Unit":{"code":"BU048","label":"IBM Software"},"Component":"Cognos Connection","Platform":[{"code":"PF002","label":"AIX"},{"code":"PF010","label":"HP-UX"},{"code":"PF027","label":"Solaris"},{"code":"PF033","label":"Windows"}],"Version":"10.2.2;10.2.1;10.2","Edition":"All Editions","Line of Business":{"code":"LOB76","label":"Data Platform"}},{"Product":{"code":"SS6G84","label":"IBM Cognos Analytics on Cloud"},"Business Unit":{"code":"BU048","label":"IBM Software"},"Component":" ","Platform":[{"code":"","label":""}],"Version":"","Edition":"","Line of Business":{"code":"LOB76","label":"Data Platform"}},{"Product":{"code":"SSLKT6","label":"IBM Maximo Asset Management"},"Business Unit":{"code":"BU048","label":"IBM Software"},"Component":" ","Platform":[{"code":"","label":""}],"Version":"","Edition":"","Line of Business":{"code":"LOB77","label":"Automation Platform"}}]

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Document Information

Modified date:
13 January 2026

UID

swg21338904

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