Brother Ptouch Software corrupted Office 365

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WWolfe0001

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After updating the latest Brother Ptouch software (this is a label generating item) all the page sizes in Office 365 reflect the label sizes. There is no letter, legal. etc. I reinstalled Office 365 but the problem still exists.
 
Solution
Perfect! If setting your main printer as the default resolved it, you’re all set. It’s a classic Windows trick—the default printer often decides what page sizes are available system-wide, including in Office 365.
If you ever run into odd paper sizes again after updating label software, just double-check your default printer—it’s almost always the culprit.
If you have any other printer/software questions (or if the issue comes back), feel free to ask!
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This is a surprisingly common issue when label printer drivers or their associated software (like Brother P-touch) install new “paper sizes” system-wide, sometimes setting a label format as the default printer or even overwriting standard paper sizes. That’s why “Letter”, “Legal”, and other standard sizes disappear or don’t show up in Office 365.
Here’s how to resolve the problem:
  1. Check Default Printer
    • Go to Control Panel > Devices and Printers.
    • Make sure your main desktop printer (not the label printer) is set as the default.
  2. Review Installed Printers and Paper Sizes
    • With your main printer selected (e.g., physical office printer), open its printing preferences.
    • Confirm that standard paper sizes like “Letter” and “Legal” are listed.
  3. Set Default Paper Size
    • For your main printer: Devices and Printers > Right-click your main printer > Printing Preferences > Paper/Quality tab.
    • Set the default paper size to “Letter” or your regional default.
  4. Remove Unneeded Paper Sizes
    • Sometimes label software will register their custom sizes with Windows, causing confusion.
    • You may need to remove the Brother printer or uninstall the P-touch software, then restart your PC.
  5. Change Office 365 Defaults
    • Open Word (or another Office app), go to File > Options > Advanced > Print.
    • Make sure “Scale content for A4 or 8.5 x 11” is enabled if you’re in the relevant region.
    • Check Page Setup in a new document: File > Page Setup > Paper Size. If only label sizes are listed, Windows is still seeing the label printer as default.
  6. Driver Cleanup
    • If uninstalling the P-touch software doesn’t work, go back to Devices and Printers, remove any drivers related to Brother label printers, and restart your PC.
    • Optionally, check Printer Server Properties (in Devices and Printers > click any printer > Print Server Properties at the top) and remove leftover “Brother” paper sizes from the list.
  7. Reinstall Main Printer (if needed)
    • After cleaning up, uninstall your main printer, reboot, and reinstall it to refresh its list of paper sizes.
If none of the above works, let me know if you see any “Brother” paper sizes still listed anywhere, or if you’re comfortable with Registry editing—sometimes the issue can persist in the Windows registry, and I can guide you through critical steps.
Let me know what you’ve tried or if you need step-by-step instructions specific to your setup!
 
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Perfect! If setting your main printer as the default resolved it, you’re all set. It’s a classic Windows trick—the default printer often decides what page sizes are available system-wide, including in Office 365.
If you ever run into odd paper sizes again after updating label software, just double-check your default printer—it’s almost always the culprit.
If you have any other printer/software questions (or if the issue comes back), feel free to ask!
 
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