Microsoft’s workaround for traditional Outlook points after Home windows 11 replace
Abstract created by Good Solutions AI
In abstract:
- PCWorld reviews that Microsoft’s KB5074109 Home windows 11 replace is inflicting Outlook freezing points, prompting the corporate to supply short-term workarounds.
- Shifting PST recordsdata away from OneDrive can resolve the freezing drawback, whereas companies can contact Microsoft Enterprise Help for pressing help.
- Microsoft is actively creating a everlasting patch for this widespread problem affecting traditional Outlook customers.
The most recent KB5074109 replace for Home windows 11 causes the traditional Outlook app to crash and lose emails, and there’s a threat of information loss if PST or OST recordsdata are saved on cloud-backed storage! You may learn extra about it on this Microsoft help web page.
If traditional Outlook crashes as a result of problem brought on by replace KB5074109, you should shut the e-mail program by way of Job Supervisor and restart it. This may occasionally lead to despatched emails not showing within the Despatched Objects folder.
Microsoft writes:
After putting in Home windows updates launched on or after January 13, 2026 (KB5074109), some functions may turn into unresponsive or expertise surprising errors when opening recordsdata from or saving recordsdata to cloud-backed storage, corresponding to OneDrive or Dropbox.
For instance, in some configurations of Outlook that retailer PST recordsdata on OneDrive, Outlook may turn into unresponsive and fail to reopen until its course of is terminated in Job Supervisor, or the system is restarted. As well as, despatched emails may not seem within the Despatched Objects folder, and beforehand downloaded could be downloaded once more.
Elsewhere, Microsoft additionally writes:
After Home windows updates on January 13, 2026 customers with Outlook POP account profiles and profiles with PST recordsdata report that Outlook hangs and doesn’t exit correctly. This problem might happen for any Outlook profile that has PSTs saved on OneDrive.
Signs reported embrace:
- Outlook hangs and exhibits “Not Responding.”
- Incapacity to reopen Outlook with out ending its course of in Job Supervisor or restarting the pc.
- Emails not showing within the Despatched Objects folder regardless of being despatched.
- Outlook redownloading emails.
Affected platforms:
- Home windows 11, model 25H2; Home windows 11, model 24H2; Home windows 11, model 23H2; Home windows 10, model 22H2; Home windows 10 Enterprise LTSC 2021; Home windows 10 Enterprise LTSC 2019
- Home windows Server 2025; Home windows Server, model 23H2; Home windows Server 2022; Home windows Server 2019
Till a repair is offered, please use webmail. The opposite workarounds could also be difficult.
Microsoft’s supplied workaround
In keeping with BleepingComputer, Microsoft has shared the next recommendation for affected customers:
- If this drawback happens, please contact the appliance developer to seek out out about doable different strategies for accessing the recordsdata.
- For Outlook-specific situations, transferring the PST recordsdata from OneDrive ought to resolve the difficulty. Directions may be discovered right here.
- As well as, electronic mail accounts can nonetheless be accessed by way of webmail, supplied that is supported by your electronic mail supplier.
- Companies and IT directors who want pressing assist resolving the difficulty ought to contact Microsoft Enterprise Help.
Microsoft is engaged on a patch for the Outlook problem. Till it’s launched, you have to to make use of the workaround described by Microsoft.
Replace KB5074109 is the primary Home windows 11 patch of 2026 and it’s already wreaking havoc on many Home windows 11 computer systems. We’ve reported on the problems on this replace, together with PCs now not shutting down, black display screen crashes, and File Explorer ignoring some settings.
This text initially appeared on our sister publication PC-WELT and was translated and localized from German.
