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Promotion of backup Publishing Agent to the master role results to agents failure

APPLIES TO:
  • Parallels Remote Application Server 15.0

Symptoms

  • After promoting backup Publishing Agent to the master role all RDSH (Terminal Server) and Gateway Agents are being shown as "Not verified" in RAS Console.
  • However at the same time, the farm is functioning (e.g. users can connect and launch published applications)
  • The are lot of errors in Publishing Agent log file:

    [E 00/00000073] Error in database Execute: 11 (DELETE FROM tbl_SessionCache WHERE s_SiteID = 1
    
  • If you revert master role to previous Publishing Agent everything is going back to normal.

Cause

Licensing.db file corruption

Resolution

On the affected server, do the following:

  1. Stop*RAS Redundancy* and RAS Publishing Agent services.
  2. Rename (or delete) Licensing.db from C:\Program Files (x86)\Parallels\ApplicationServer\AppData
  3. Start the services from step 1 back.
  4. Initiate promotion to the Master role once again.



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