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back to article Microsoft admits Outlook might freeze when saving files to OneDrive

Microsoft's January Windows update has delivered another blow for unsuspecting users – apps including Outlook might freeze when saving files to cloud storage services such as OneDrive or Dropbox. The megacorp acknowledged the latest issue days after releasing an emergency out-of-band update to deal with connection and …

  1. Craig 2
    Facepalm

    Error metrics

    A more fun metric might be "the number of news articles per day reporting what we broke now"

    I would say 2026 is definitely trending higher for Microsoft. I hope it's paying some bills for El Reg staff, so no complaints from them I guess!

  2. Doctor Syntax Silver badge

    Maybe Tuesday the 13th is another date to avoid, possibly replacing Friday the 13th.

    1. A. Coatsworth
      Pirate

      It is! At least in Spain and Latin America.

      Tuesday the 13th and Sunday the 7th are a lot more ominous than Voorhees' favorite day, or at least were before the Americanization of the local culture over here

    2. Strahd Ivarius Silver badge
      Devil

      Avoid all 2nd Tuesday of a month!

      And the following Wednesday too!

  3. ComicalEngineer Silver badge

    M$ Exceeding expectations

    Just when you think they can't make it any worse, they do.

    Thankfully I've not used Outlook since 2007 and don't use onedrive at all.

    1. Zakspade

      Re: M$ Exceeding expectations

      Yes. That's one way. Not sure of the method you employed to not use Outlook and Onedrive, but mine was to dump all Micro$oft products and go elsewhere. It wasn't an overnight thing (without some really serious planning, I can't see how it is easily possible), but a major switch followed by using a virtual PC to fire up the odd app/program I hadn't yet found an alternative for (or had just reared up and let me know I needed to find an alternative).

      It was all about 6 months, during which the instances of having to fire up the virtual PC became rarer..

      Oh, I used to support PCs and used to work for a Micro$oft Gold Certified Partner - plus I beta-tested as part of that employment. So it wasn't as if I moved from a software environment I 'sort of' understood, to something a little more unknown. It was from something I had a firm grounding in, to something I hadn't a clue about.

      However, I've now been 'sober' for about three years and can honestly say that I am more comfortable these days than I was in the final few years of Windows and Windows software.

      It isn't an overnight switch. You can't expect to switch at the weekend and be happy by the following Friday. You have to weather the pain (and it is a paid at times). However, the result is freedom and relief.

      These days, I read about the regular Micro$oft update cycle 'glitches' with a smile and see it all as entertainment.

      1. bigphil9009

        Re: M$ Exceeding expectations

        "Micro$oft" come on man, what are you, 12?

        1. Donn Bly

          Re: M$ Exceeding expectations

          If anything, by referring to Microsoft using its common name of 30+ years ago shows a sense of experience and maturity that "kids these days" like yourself just don't have or understand.

  4. Alan Mackenzie

    40 years and counting.

    Email is not a new technology. It must be around 40 years old, if not more. On my system it just works, and has done for several decades.

    What is Microsoft doing that they can't get even such a mature technology working?

    1. m4r35n357 Silver badge

      Re: 40 years and counting.

      It started with top posting, then went downhill from there ;)

    2. Gordon 10

      Re: 40 years and counting.

      You are confusing where the maturity is.

      The email channel is well understood and the subject of reams of internationally agreed technical standards, which is why almost anyone except from MS can build a working email client.

      Its clear where the maturity *is not*

    3. Roland6 Silver badge

      Re: 40 years and counting.

      The issue isn’t email as such, it’s file access. Given the nature of .pst files - a “simple” file-based online database, this would suggest other thick client online database applications such as SQL*Server Express will also fail if using cloud storage.

      A question has to be whether the web-based Outlook 365, which by default will use OneDrive also suffers from the problem, just that it’s not visible to users in the same way.

  5. ABugNamedJune

    It's a good thing that in New Outlook, save to OneDrive is the only option then

    My advice whenever a user has any issue, no matter how small in New Outlook is to switch to Classic

    1. AJ MacLeod

      Re: It's a good thing that in New Outlook, save to OneDrive is the only option then

      That's like jumping from the fire into the frying pan... far better to switch to something completely different like Thunderbird, which, for all its failings, generally just works.

      1. the spectacularly refined chap Silver badge

        Re: It's a good thing that in New Outlook, save to OneDrive is the only option then

        Time to quote Michael Elkins on Mutt...

        "All mail clients suck. This one just sucks less."

  6. Jou (Mxyzptlk) Silver badge

    No cloud no worry

    no pain still gain

    ready to prooove it again

    no cloud no worry

    (Galaxy Rangers intro...)

  7. tip pc Silver badge
    FAIL

    makes you wonder why sane people update their systems

    i remember when i was much younger i'd always install the latest updates.

    when fixing someones PC the 1st thing i'd do is updates.

    i've been a mac user since ~91, ive taken the same approach on those too, until recently.

    i will be keeping my systems on osx/ios26 & may roll back my laptop to osx 15.

    app updates i will make a judgement on, OS updates i will take the service updates but i likely will not be upgrading to osx/iso 27 unless i truly need to.

    if i could roll my ios stuff back to ios 18 i would.

    There are no new features in iso26 i actually want.

    If i'm not having an issue with my apps why do i need to update?

    re app vulnerabilities, my personal machines are protected by apples xprotect etc plus the apple firewall, plus home firewall, plus nat so most addressed exploits likely can never be remotely exploited.

    unless i'm facing a usability issues or bugs then i likely have no need for the app updates.

    Its not like updates fix all bugs or won't introduce new ones as per this article so why would any sane person update unless there is some significant reason to?

    1. alain williams Silver badge

      Re: makes you wonder why sane people update their systems

      i remember when i was much younger i'd always install the latest updates.

      I remember those days. But now I want a system that just works, that is why I run Debian.

      1. hedgie Bronze badge

        Re: makes you wonder why sane people update their systems

        Got the Mac on Sonoma and have no reason to do more than apply service patches at the moment. On the laptop though, I think I have taken leave of my senses, since I'm running a rolling Linux distro (Tumbleweed), but at least it's easy to roll back when (not if) something breaks.

  8. BartyFartsLast Silver badge

    Why the hell would you?

    It's *never* been a good idea to access PST files over any kind of network link, they're too fragile and the repair tool is a very blunt one that more often than not lost data for you.

    MS used to advise they were not to be used over networks

    Allowing them to be stored in OneDrive is idiocy.

    1. train_wreck

      Re: Why the hell would you?

      Yes indeed. Old school Quickbooks company files were the same way. Very easy to corrupt if you tried to run them over a VPN or other high latency link.

  9. Pascal Monett Silver badge

    What I find incredible

    I find it insane that Borkzilla continually fucks up and yet there is no big-name company or even country that decides that enough is enough, let's find another solution that actually works 24/7/365.

    I'm pretty sure that, if all the costs of Redmonds' failures were tallied up, it would largely cover the cost of going to Linux and having something that is actually stable for a change.

    But no. Fortune 1000 companies and everyone else just goes along with Windows, like it's a brain worm that has infected everyone.

    If the Internet ran on Windows Server, half of the world would spend half its time not being connected. You think game server companies use Windows ? Think again. They know how picky gamers are, and they know the value of true 24/7/365 service. Gaming is more reliable than MS Office, these days.

    And that's not going to change any time soon.

  10. Anonymous Coward
    Anonymous Coward

    I suspect this is actually a wider issue. The health dashboard refers to “apps” freezing. I’ve just had Notepad refuse to open .txt files on two different machines, with File System error. Said .txt files open in Word OK, so not a disk error, (and on two different machines at about the same time?) Uninstalling Notepad and installing a new copy from the Microsoft Store seems to have fixed it on both machines.

    1. Jou (Mxyzptlk) Silver badge

      Notepad, on Windows 11, IS an "App". If you want the non-app version you have to use any Windows Server version. 'cause even in Server 2025 the notepad.exe ist still the classic i.e. Windows 7 style program. Windows 10 and 11 are "App", i.e. the cancer-code-induced-blown-up-crap type. (Dunno about Windows 8, don't have such a VM)

      The fact that you uninstalled it and reinstalled it from the store is the proof.

      1. Jou (Mxyzptlk) Silver badge

        PS: Or copy it from ANY NT Version, 3.51 up to Server 2003 x64. Those executables were language locked though, Vista brought the .mui variant which allowed the language-UI to be specified outside the .exe.

      2. Anonymous Coward
        Anonymous Coward

        Yes, I know it's an app. That's the point I was making. It's apps in general, not just Outlook. It appears to be a wider problem than this article suggests.

    2. BartyFartsLast Silver badge

      New notepad, like new outlook is a steaming turd.

  11. Anonymous Coward
    Anonymous Coward

    PST in Onedrive

    Why? Just why?

    1. Anonymous Coward
      Anonymous Coward

      Re: PST in Onedrive

      No one would actually choose to put a PST in OneDrive.

      BUT if M$ decided to move files rather than backup then yes it happens.

      (Ask anyone who's not paid after the 1 year trial that came with the laptop. All their files now vanish and there's a panic purchase)

      1. Richard 12 Silver badge

        Re: PST in Onedrive

        If you enable "OneDrive Backup", it moves your files.

        So it's extremely likely that it was OneDrive that moved the PST into OneDrive, without the administrators realising that was the consequence of a couple of apparently unrelated policies.

      2. Fred Daggy Silver badge
        Devil

        Re: PST in Onedrive

        If you've a corporate deployment, for Flying Spaghetti Monster's sake, manage the default PST and OST locations.

        Use the deployment XML/Group Policy to ensure the default location is something like C:\Exchange. At least by default. Users can still do strange things. Suitably trained, all techs will know to at least start looking.

        Never had a PST or OST file work after being opened within Onedrive. Zip archive of PST file in Onedrive, sure. ZIP file reduces the temptation to open a file "just in case" or "just for testing".

    2. AJ MacLeod

      Re: PST in Onedrive

      The Microsoft default now is to try every possible trick to get your main user profile folders into OneDrive, including the Documents folder. Guess where Outlook likes to store its PST files these days?

  12. Always Right Mostly Bronze badge

    Do people who work at Microsoft actually use their own products?

    1. Alumoi Silver badge

      It depends on whether Copilot is Windows or Unix based. No human would produce such crap code.

    2. BartyFartsLast Silver badge

      I suspect they're all Linux or Mac users

  13. Anonymous Coward
    Anonymous Coward

    It's not like saving your work on a computer is a basic function we've relied on for about 40yr or anything.

    Is MS suggesting we just upload everything into Coporite and let it 'remember' what we were doing?

    Any idea how we step of the enshittification bus? I'm tired of everything being shittier than it was in the 90s and 10x the price.

    1. TVU Silver badge

      "Is MS suggesting we just upload everything into Coporite and let it 'remember' what we were doing?"

      I initially misread Coporite as 'Coprolite' although that second word could also describe the current unfortunate of Microsoft and its quality assurance testing or lack thereof.

      1. Anonymous Coward
        Anonymous Coward

        My apologies for the typo,

        It should have been "Coprolite". Or the full title "Microslop Coprolite"

  14. Luiz Abdala Silver badge
    Trollface

    PST files were a disaster on their own since the last epoch.

    Ever since PST files were limited to 2GB they were a liability.

    I'm surprised they work under dropbox or onedrive AT ALL.

    Not having your emails online somewhere and having a local copy is fantastic, but the moment you put something that should be on a LOCAL storage to be placed on a network, funky stuff starts to happen. 20 years of cruft on the whole exchange/outlook architecture might have something to do with it, perhaps, by chance? Not designed for purpose being the rest of the problem?

  15. Strahd Ivarius Silver badge
    Trollface

    If the issue is limited to Win11 23H2...

    ... then it is not an issue, since it is out of support.

  16. IsSoftware

    Outlook is not the only thing Microsoft breaks

    Update from December and January have broken MS word and assistive technologies like read aloud have simply stopped working or pause after the first paragraph and refuse to start again.

    Last time this happened in 2003 required to change or remove plug-ins to get it to work again that affects no longer works.

    1. Anonymous Coward
      Anonymous Coward

      Re: Outlook is not the only thing Microsoft breaks

      But....but...

      30% of our code was written by AI.....

      Shsreholder vvalue has been maintained....

      Shareholder value must be maintained....must....must

  17. Excused Boots Silver badge

    Very, very slight correction to Richard Speed’s article but I do believe that PST stands for ‘Personal STore(age), no tables involves it's basically a massive text file. Unless fellow commutards know better and can correct me - which is fine, as only idiots believe they know everything and aren’t open to being corrected!

    And historically, PST files never liked being on any sort of remote storage, even having them on a local files server could be an issue. So, yes I can well imagine that if one got lifted and shifted to OneDrive, then all sorts of interesting hilarity might ensue.

    I’ve said this before and I think it's worth repeating, Window’s biggest advantage is that it works on all manner of oddball legacy equipment, and Window’s biggest problem is that it works on all manner of oddball legacy equipment!

    And I think that this is a case in point, PST files, legacy, but yet still used by many customers, don’t take kindly to being moved to remote storage - but are the people currently developing Windows even aware of this and other (legacy) technologies?

    What I firmly believe MS should have done with Windows 10 was to initiate a full rewrite, dump all of the legacy baggage,’oh you are still using a scanner application written in 1995, no updates available - tough, will not work in Windows 10, get a new scanner’! But they didn’t; they had the opportunity to draw a line in the sand and move on. But they didn’t, they caved to ‘backwards compatibility’, and this is the result - and it can only get worse!

    1. Jou (Mxyzptlk) Silver badge

      > PST stands for ‘Personal STore(age), no tables involves it's basically a massive text file.

      You are terribly wrong. I can store the mail "as is"contain text, but it has a b-tree and directory type database format. Usually the data is stored compressed, uncompressed got out of fashion long before I first used outlook (> two decades)..

      The netscape/mozilla/thunderbird/seamonkey mail file format is pure text. With an additional index next to it.

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