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Upgrading to vCenter Server 6.0 fails with the error: Encountered an internal error. see %ProgramData%\vCenterServer\logs\firstboot\vpostgres-firstboot.py_344_stderr.log This is an unrecoverable error, please retry install (2111977)

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  • Upgrading from vCenter Server 5.x to vCenter Server 6.0 fails with the error:

    Encountered an internal error. see C:\ProgramData\vCenterServer\logs\firstboot\vpostgres-firstboot.py_344_stderr.log

  • In the C:\ProgramData\vCenterServer\logs\firstboot\vpostgres-firstboot.py_344_stderr.log file, you see entries similar to:

    vPostgres firstboot(action=firstboot) failed

  • In the C:\ProgramData\Vmware\CIS\logs\vmware\vpx\vcdb_import.err file, you see entries similar to:

    Traceback (most recent call last):
    File "C:\Program Files\VMware\vCenter Server\cis_upgrade_runner\payload\component-scripts\vcdb\windows\import\", line 4, in <module>s_u16 =
    File "C:\Program Files\VMware\vCenter Server\python\lib\", line 668, in read return
    File "C:\Program Files\VMware\vCenter Server\python\lib\", line 474, in read newchars, decodedbytes = self.decode(data, self.errors)
    File "C:\Program Files\VMware\vCenter Server\python\lib\encodings\", line 106, in decode codecs.utf_16_ex_decode(input, errors, 0, False)


This issue occurs when vCenter Server does not have enough memory to complete the installation.


To resolve this issue, increase the vCenter Servers memory to at least 16GB.

See Also

Request a Product Feature

To request a new product feature or to provide feedback on a VMware product, please visit the Request a Product Feature page.


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  • 8 Ratings