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"The bug is the RPC [that] UBPM (Unified Background Process Manager) uses to create the S4U (Services For User) Token for task scheduler will sometimes clobber your saved credentials in LSASS. That is used to derive your DPAPI User Encryption Key, so it changes and no longer works."

Until Microsoft delivers a fix, its recommended workaround involves right-clicking the Windows 10 Start Button and selecting Windows PowerShell (Admin).

Microsoft then recommends:

1. Copy and paste the command below into Windows PowerShell and press Enter.
2. Get-ScheduledTask | foreach { If (([xml](Export-ScheduledTask -TaskName $_.TaskName -TaskPath $_.TaskPath)).GetElementsByTagName("LogonType").'#text' -eq "S4U") { $_.TaskName } }
3. If you see any Tasks listed from the PowerShell output, make a note of them.

Next, go to Windows Task Scheduler and disable any tasks you found from the above command.  Follow these steps:

1. In the Windows 10 Search box, type Task Scheduler and then open the Task Scheduler app.
2. Locate the task in the Window (HP Customer participation), or other task from the Windows PowerShell output.
3. Right-click the task and choose Disable.
4. After you disable the task, restart Windows.
5. You may have to reenter password ie: outlook, shared drives
6. Power cycle to confirm

NOTE: Use at your own risk.