• MacOS - Time Machine error ("files unavailable")

    From -hh@21:1/5 to All on Sat Feb 15 09:46:28 2025
    Been struggling with this problem for awhile now -- error reads:

    "Time Machine did not finish backing up because some files were
    unavailable. Backups will resume when your Mac is unlocked."

    There's various 'rebuild' suggestions from Apple, but the following
    fixed it for me

    1. On your Mac, open System Settings; goto "Lock Screen", see if
    "Require password after screen saver begins..." is greyed out. If so,
    then continue.

    2. On your Mac, launch the iPhone Mirroring App.

    3. Open "Settings" from its menu.

    4. Change from "Automatically Authenticate" to "Ask every time".

    5. Close the dialog box & Quit the iPhone Mirroring App.

    6. Go back to System Settings & check the Lock Screen settings - the
    "Require password after screen saver begins..." should no longer be
    greyed out. Try setting it to something other than "Immediate" for now.

    Done (maybe do a reboot now to be sure)

    Overall, I think that the iPhone Mirroring App's automatic
    authentication is the root cause of this TM error.


    -hh

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Alan@21:1/5 to -hh on Sat Feb 15 16:02:34 2025
    On 2025-02-15 06:46, -hh wrote:

    Been struggling with this problem for awhile now -- error reads:

    "Time Machine did not finish backing up because some files were
    unavailable. Backups will resume when your Mac is unlocked."

    There's various 'rebuild' suggestions from Apple, but the following
    fixed it for me

    1.  On your Mac, open System Settings; goto "Lock Screen", see if
    "Require password after screen saver begins..." is greyed out. If so,
    then continue.

    2.  On your Mac, launch the iPhone Mirroring App.

    3.  Open "Settings" from its menu.

    4.  Change from "Automatically Authenticate" to "Ask every time".

    5.  Close the dialog box & Quit the iPhone Mirroring App.

    6.  Go back to System Settings & check the Lock Screen settings - the "Require password after screen saver begins..." should no longer be
    greyed out. Try setting it to something other than "Immediate" for now.

    Done (maybe do a reboot now to be sure)

    Overall, I think that the iPhone Mirroring App's automatic
    authentication is the root cause of this TM error.


    -hh

    I'm not sure you need to do anything, HH.

    What does it say for when the last back was?

    Is that not changing from some past date?

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From -hh@21:1/5 to Alan on Sun Feb 16 10:01:08 2025
    On 2/15/25 19:02, Alan wrote:
    On 2025-02-15 06:46, -hh wrote:

    Been struggling with this problem for awhile now -- error reads:

    "Time Machine did not finish backing up because some files were
    unavailable. Backups will resume when your Mac is unlocked."

    There's various 'rebuild' suggestions from Apple, but the following
    fixed it for me

    1.  On your Mac, open System Settings; goto "Lock Screen", see if
    "Require password after screen saver begins..." is greyed out. If so,
    then continue.

    2.  On your Mac, launch the iPhone Mirroring App.

    3.  Open "Settings" from its menu.

    4.  Change from "Automatically Authenticate" to "Ask every time".

    5.  Close the dialog box & Quit the iPhone Mirroring App.

    6.  Go back to System Settings & check the Lock Screen settings - the
    "Require password after screen saver begins..." should no longer be
    greyed out. Try setting it to something other than "Immediate" for now.

    Done (maybe do a reboot now to be sure)

    Overall, I think that the iPhone Mirroring App's automatic
    authentication is the root cause of this TM error.


    -hh

    I'm not sure you need to do anything, HH.

    Well, it is indicating a failure to complete the backup(s).

    After clicking on the (red "i"), the full error message is:

    [quote]
    Time Machine couldn't complete the backup to "[drive name]"

    Time Machine did not finish backing up because some files were
    unavailable. Backups will resume when your Mac is unlocked
    [/quote]


    What does it say for when the last back was?

    Days prior, not the most recent attempt which failed.


    Is that not changing from some past date?

    No, its not changing.


    FYI, an update to the above: the above solution didn't work after I
    reduced the time from 8hrs to less (eg, 15 minutes). Damn.


    Other reading on this problem comments on suspecting that USB drives
    attached through a hub could be associated too. I have noticed a brief
    TM status panel dialog that has a comment along the lines of saying that
    a TM backup attempt will resume once the drive is reattached, so maybe
    there's some sort of (deep?) sleep / logically being no longer attached
    element too...but this shouldn't apply for an ongoing TM session
    *failing* to complete, as in that instance, the drive is already
    attached and doing data I/O for the backup.


    -hh

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Alan@21:1/5 to -hh on Sun Feb 16 12:27:18 2025
    On 2025-02-16 07:01, -hh wrote:
    On 2/15/25 19:02, Alan wrote:
    On 2025-02-15 06:46, -hh wrote:

    Been struggling with this problem for awhile now -- error reads:

    "Time Machine did not finish backing up because some files were
    unavailable. Backups will resume when your Mac is unlocked."

    There's various 'rebuild' suggestions from Apple, but the following
    fixed it for me

    1.  On your Mac, open System Settings; goto "Lock Screen", see if
    "Require password after screen saver begins..." is greyed out. If so,
    then continue.

    2.  On your Mac, launch the iPhone Mirroring App.

    3.  Open "Settings" from its menu.

    4.  Change from "Automatically Authenticate" to "Ask every time".

    5.  Close the dialog box & Quit the iPhone Mirroring App.

    6.  Go back to System Settings & check the Lock Screen settings - the
    "Require password after screen saver begins..." should no longer be
    greyed out. Try setting it to something other than "Immediate" for now.

    Done (maybe do a reboot now to be sure)

    Overall, I think that the iPhone Mirroring App's automatic
    authentication is the root cause of this TM error.


    -hh

    I'm not sure you need to do anything, HH.

    Well, it is indicating a failure to complete the backup(s).

    After clicking on the (red "i"), the full error message is:

    [quote]
    Time Machine couldn't complete the backup to "[drive name]"

    Time Machine did not finish backing up because some files were
    unavailable.  Backups will resume when your Mac is unlocked
    [/quote]


    What does it say for when the last back was?

    Days prior, not the most recent attempt which failed.


    Is that not changing from some past date?

    No, its not changing.


    FYI, an update to the above: the above solution didn't work after I
    reduced the time from 8hrs to less (eg, 15 minutes).  Damn.


    Other reading on this problem comments on suspecting that USB drives
    attached through a hub could be associated too.  I have noticed a brief
    TM status panel dialog that has a comment along the lines of saying that
    a TM backup attempt will resume once the drive is reattached, so maybe there's some sort of (deep?) sleep / logically being no longer attached element too...but this shouldn't apply for an ongoing TM session
    *failing* to complete, as in that instance, the drive is already
    attached and doing data I/O for the backup.
    I'm having the same kind of thought, yes.

    I'm going to attach my backup drive while my machine is awake and see
    what happens, and then I'll do the next time, but close the lid after
    the backup has started.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Alan@21:1/5 to Alan on Sun Feb 16 15:29:07 2025
    On 2025-02-16 12:27, Alan wrote:
    On 2025-02-16 07:01, -hh wrote:
    On 2/15/25 19:02, Alan wrote:
    On 2025-02-15 06:46, -hh wrote:

    Been struggling with this problem for awhile now -- error reads:

    "Time Machine did not finish backing up because some files were
    unavailable. Backups will resume when your Mac is unlocked."

    There's various 'rebuild' suggestions from Apple, but the following
    fixed it for me

    1.  On your Mac, open System Settings; goto "Lock Screen", see if
    "Require password after screen saver begins..." is greyed out. If
    so, then continue.

    2.  On your Mac, launch the iPhone Mirroring App.

    3.  Open "Settings" from its menu.

    4.  Change from "Automatically Authenticate" to "Ask every time".

    5.  Close the dialog box & Quit the iPhone Mirroring App.

    6.  Go back to System Settings & check the Lock Screen settings -
    the "Require password after screen saver begins..." should no longer
    be greyed out. Try setting it to something other than "Immediate"
    for now.

    Done (maybe do a reboot now to be sure)

    Overall, I think that the iPhone Mirroring App's automatic
    authentication is the root cause of this TM error.


    -hh

    I'm not sure you need to do anything, HH.

    Well, it is indicating a failure to complete the backup(s).

    After clicking on the (red "i"), the full error message is:

    [quote]
    Time Machine couldn't complete the backup to "[drive name]"

    Time Machine did not finish backing up because some files were
    unavailable.  Backups will resume when your Mac is unlocked
    [/quote]


    What does it say for when the last back was?

    Days prior, not the most recent attempt which failed.


    Is that not changing from some past date?

    No, its not changing.


    FYI, an update to the above: the above solution didn't work after I
    reduced the time from 8hrs to less (eg, 15 minutes).  Damn.


    Other reading on this problem comments on suspecting that USB drives
    attached through a hub could be associated too.  I have noticed a
    brief TM status panel dialog that has a comment along the lines of
    saying that a TM backup attempt will resume once the drive is
    reattached, so maybe there's some sort of (deep?) sleep / logically
    being no longer attached element too...but this shouldn't apply for an
    ongoing TM session *failing* to complete, as in that instance, the
    drive is already attached and doing data I/O for the backup.
    I'm having the same kind of thought, yes.

    I'm going to attach my backup drive while my machine is awake and see
    what happens, and then I'll do the next time, but close the lid after
    the backup has started.


    Step one went fine: Latest Backup to "Backup 1" Today, 15:19.

    I'll see what happens overnight and report back.

    :-)_

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)