Worked through the process to create the Office 365 deployment outlined on 184965 "Deploying Microsoft Office 365 updates with Patch Management Solution", configured the Software Update Cycle schedule, and found the results as follows:
Exit Code 1603, 1636
Note:
Similar messages can happen for Office 2019:
Returning result code 0x643
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Date: 7/26/2021 10:07:43 AM, Tick Count: 145271359 (1.16:21:11.3590000), Size: 262 B
Process: OfficeUpdater.exe (5888), Thread ID: 19444, Module: OfficeUpdater.exe
Priority: 4, Source: wmain
Program 'Office2019-16.0.10376.20033-PerpetualVL2019.cab for MS21-07-VL2019' completed. Exit code=1603. Execution context='Administrator'. RunAs='\'
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Date: 7/26/2021 10:07:43 AM, Tick Count: 145271375 (1.16:21:11.3750000), Size: 381 B
Process: AeXNSAgent.exe (14256), Thread ID: 1304, Module: smfagent.dll
Priority: 4, Source: ProgramExec
Patch Management Solution 7.5.x, 7.6.x and 8.x
Confirmed Exit Code 1605 occurred when O365 was running and trying to update.
You may also see messages like these ones during the file execution, saying there is a process that is been called and it is failing:
Window 'OfficePowerManagerWindow' with HWND 160C8C for process 4DDC was found:
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Date: 7/26/2021 10:07:43 AM, Tick Count: 145271296 (1.16:21:11.2960000), Size: 326 B
Process: OfficeUpdater.exe (5888), Thread ID: 19444, Module: OfficeUpdater.exe
Priority: 4, Source: EnumWindowCallback
Post WM_CLOSE message to window with HWND 160C8C
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Date: 7/26/2021 10:07:43 AM, Tick Count: 145271312 (1.16:21:11.3120000), Size: 322 B
Process: OfficeUpdater.exe (5888), Thread ID: 19444, Module: OfficeUpdater.exe
Priority: 4, Source: FinderOfficeWindow::CloseWindowsOfTheProcess
Windows was found for OfficeClickToRun process in silent mode. An attempt was made to close the windows.
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Date: 7/26/2021 10:07:43 AM, Tick Count: 145271312 (1.16:21:11.3120000), Size: 388 B
Process: OfficeUpdater.exe (5888), Thread ID: 19444, Module: OfficeUpdater.exe
Priority: 4, Source: OfficeUpdater::Office2016Update::performUpdateScenario
Advised the following remedial options: