Windows 10 Update Error Code -1047526904

n-Able Patch Management is failing to install the Windows 10 21H1 feature upgrade. The only reason it gives is “Process exited with code –1047526904.”

n-able Windows upgrade failure

This page from ManageEngine suggests that the issue is a program incompatibility. Tracking back through setup logs:

1. The n-Able Patch Management Engine (PME) log, C:\ProgramData\MspPlatform\PME\log\ActionManager.log, repeats the error, but helpfully points back to files in C:\$Windows.BT:

[11] 2021-09-27 03:02:23,236 OFF   InstallFeatureUpdate => --- Installation media was prepared successfully. Start FU installation ---
[11] 2021-09-27 03:02:23,237 OFF   	Check progress in Panther logs:
[11] 2021-09-27 03:02:23,238 OFF   		C:\$Windows.~BT\Sources\Panther\setupact.log
[11] 2021-09-27 03:02:23,239 OFF   		C:\$Windows.~BT\Sources\Panther\setuperr.log
[11] 2021-09-27 03:02:23,241 DEBUG Starting process (time limit: 2021-09-27 06:00)...
[11] 2021-09-27 03:03:36,781 OFF   InstallFeatureUpdate.ParseResult => Installation action for [8c6a24e2-698b-4120-ae14-522c031b64af] finished with ExitCode = '-1047526904'
[11] 2021-09-27 03:03:36,790 ERROR Previous action ended with error, stopping feature update workflow. Error: Process exited with code -1047526904

2. C:\$WINDOWS.~BT\Sources\Panther\setupact.log has this near the end:
SetupHost: Diagnostic results location: [C:\WINDOWS\logs\SetupDiag\SetupDiagResults.xml]

3. C:\WINDOWS\logs\SetupDiag\SetupDiagResults.xml is pretty useless:

<?xml version="1.0" encoding="utf-16"?>
<SetupDiag xmlns:xsd="" xmlns:xsi="" xmlns="">
  <LogErrorLine>2021-09-27 03:03:23, Error                 MOUPG  CSetupManager::ExecuteInstallMode(868): Result = 0xC1900208</LogErrorLine>
  <FailureData>Error: SetupDiag reports abrupt down-level failure.Last Operation: FinalizeError: 0xC1900208 - 0x4000D</FailureData>
  <FailureData>LogEntry: 2021-09-27 03:03:23, Error                 MOUPG  CSetupManager::ExecuteInstallMode(868): Result = 0xC1900208</FailureData>
  <FailureData>Refer to "" for error information.</FailureData>
  <FailureDetails>ErrorCode = 0xC1900208, ExCode = 0x4000D, Oper = Finalize</FailureDetails>

4. Back in the C:\$WINDOWS.~BT\Sources\Panther folder, the ScanResult.xml file as well as the latest CompatData*.xml file both point to the same “hard” upgrade block, on PGP Desktop:

    <Program Name="PGP Desktop" Id="000022bd552434bca7082a872ef4dff5b0ad00000904" IconId="000022bd552434bca7082a872ef4dff5b0ad00000904">
        <CompatibilityInfo BlockingType="Hard" StatusDetail="UpgradeBlock"/>
        <Action Name="AutoUninstall" Link="wsc:wica:_000022bd552434bca7082a872ef4dff5b0ad00000904" DisplayStyle="Link" ResolveState="NotRun"/>

PGP Desktop has blocked previous Windows 10 upgrades, so this isn’t too surprising. The only thing that seems odd is when I choose to Check for Updates, the 21H1 upgrade worked fine, without having to uninstall PGP Desktop first.

n-able Windows upgrade failure 2

Why does an interactive upgrade work but an upgrade through Patch Management fail?

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