62843: Acronis Cyber Backup: Backup fails with "PRNG not seeded"

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Last update: Thu, 2020-09-03 06:03


  1. You create a backup task with encryption. Version 12 backup archive format is used.
  2. Backup fails with the following error:

    PRNG not seeded

  3. Alternatively, service_process.exe crashes

3. Alternatively, backup fails with:
The password for the protected backup is incorrect

AND in pcs log:

  • Windows: C:\ProgramData\Acronis\BackupAndRecovery\MMS\pcs.0.log.gz
  • Linux:  /var/lib/Acronis/BackupAndRecovery/MMS/pcs.0.log.gz
  • macOS: /Library/Application Support/Acronis/BackupAndRecovery/MMS/pcs.0.log.gz

you find this error:
TLS connect failed with error 'error:24064064:random number generator:SSLEAY_RAND_BYTES:PRNG not seeded'


Issue in the product.


Make sure that Server(LanmanServer) and Workstation(LanmanWorkstation) services are started:

  1. Hit Win+R and type services.msc. Click OK to open Services window
  2. Right-click Workstation service and select Properties. Select the Startup typeAutomatic and click OK. Right-click Workstation service and select Restart.
  3. Right-click Server service and select Properties. Select the Startup type - Automatic and click OK. Right-click Server service and select Restart.