HOW TO FIX: Microsoft Outlook PST file has reached its maximum file size

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Matthews Tech Hub

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Published on October 10, 2024 11:06:29 AM ● Video Link: https://www.youtube.com/watch?v=vDA7C2-JX-U

Duration: 0:00

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In today's video, we look at how you can fix a common issue that shows "The file Outlook.pst has reached its maximum size. To reduce the amount of data in this file, select some items that you no longer need, and then permanently delete them (shift +del)" when your PST file reaches 50GB in size and how you can increase it to 100GB to avoid having problems with receiving emails for larger inboxes. This is all done through the registry so please make sure you take backups before proceeding!

Outlook 2016:
HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\PST
Outlook 2013: HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\Outlook\PST
Outlook 2010: HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Outlook\PST
Outlook 2007: HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Outlook\PST
Outlook 2003: HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\Outlook\PST

For Domain Administrators: (Group Policy)

Outlook 2016: HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\16.0\Outlook\PST
Outlook 2013: HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\15.0\Outlook\PST
Outlook 2010: HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\14.0\Outlook\PST
Outlook 2007: HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\12.0\Outlook\PST
Outlook 2003: HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\11.0\Outlook\PST

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Video Hashtags:
#PST #MaxFileSize #Fix #RegEdit #windows10 #windows11 #microsoft #outlook #microsoftoutlook #registryeditor

-Video chapters below:

Intro (0:00)
Open Registry Editor (0:48)
Take a backup of the Registry Editor (1:16)
Locating the Microsoft Office Key (Regedit) (2:03)
Applying the fix in RegEdit (3:23)
Outro (5:30)