![](http://www.howcomputer.com/zbxe/layouts/xe_official/images/blank.gif)
컴퓨터와 관련하여 자주 질문 하시는 것들을 모아 이곳에 올려 봅니다.
필요하신 내용이나 알고 싶은 내용을 회원 가입 하여 올려 주시면 답변 드리겠습니다. 또한 필요하신 제품이나 견적을 요청 하시면 원하시는 사양에 맞추어 견적 드리겠습니다.
감사합니다.
TEL : 213-380-1252
Copyright © 2001 - 2023 Howcomputer All rights reserved. 3200 Wilshire Blvd. Suite 1507 North Tower., Los Angeles, CA 90010 (Vermont + Wilshire - Bank of Hope 15FL) / T : 213.380.1252
HowComputer - Q & A - Question & Answer
Computer 및 Network 관련 어떤 문제라도 또 어떤 구입이라도 문의 주시면 이곳 게시판에서 해결 해드리겠습니다.
자세한 문의는 연락주셔여. TEL : 213-380-1252
글수 474
2017.01.26 13:42:40 (*.35.43.245)
345352
Quotation Request | How to configure the size limit for both (.pst) and (.ost) files in Outlook |
---|
Summary
Microsoft Outlook 2013, Microsoft Outlook 2010, Microsoft Office Outlook 2007, and Microsoft Office Outlook 2003 support American National Standards Institute (ANSI) and UNICODE personal folders (.pst) and offline folder (.ost) files. This article describes how to use the following four registry entries to limit the size of both the .pst and the .ost files:
In the following table, the MaxLargeFileSize registry entry and the WarnLargeFileSize registry entry refer to a UNICODE formatted (new Large format) file, and the MaxFileSize registry entry and the WarnFileSize registry entry refer to an ANSI formatted (an earlier Microsoft Outlook format) file. The UNICODE values are set in megabyte (MB) increments, while the ANSI values are set in byte increments.
- The MaxFileSize registry entry
- The WarnFileSize registry entry
- The MaxLargeFileSize registry entry
- The WarnLargeFileSize registry entry
The MaxFileSize registry entry
The MaxFileSize registry entry determines the absolute maximum size that both the .pst and the .ost files can grow to. After this maximum size is reached, Outlook does not permit the size of the file to grow beyond this size.The WarnFileSize registry entry
The WarnFileSize registry entry determines the maximum data that both the .pst and the .ost files can have. After this maximum data is reached, neither the .pst nor the .ost files are permitted to add any more data. However, the size of the physical file may still increase because of internal processes.In the following table, the MaxLargeFileSize registry entry and the WarnLargeFileSize registry entry refer to a UNICODE formatted (new Large format) file, and the MaxFileSize registry entry and the WarnFileSize registry entry refer to an ANSI formatted (an earlier Microsoft Outlook format) file. The UNICODE values are set in megabyte (MB) increments, while the ANSI values are set in byte increments.
Outlook 2013 and Outlook 2010
Name | Type | Valid Data Range | Default |
---|---|---|---|
MaxLargeFileSize | REG_DWORD | 0x00000001 – 0x0000C800 | 0x0000C800 51,200 (50 GB) |
WarnLargeFileSize | REG_DWORD | 0x00000000 – 0x0000BE00 | 0x0000BE00 48,640 (47.5 GB) |
MaxFileSize | REG_DWORD | 0x001F4400 – 0x7C004400 | 0x7BB04400 2,075,149,312 (1.933 GB) |
WarnFileSize | REG_DWORD | 0x00042400 – 0x7C004400 | 0x74404400 1,950,368,768 (1.816 GB) |
Outlook 2007 and Outlook 2003
Name | Type | Valid Data Range | Default |
---|---|---|---|
MaxLargeFileSize | REG_DWORD | 0x00000001 – 0x0000C800 | 0x00005000 20,480 (20 GB) |
WarnLargeFileSize | REG_DWORD | 0x00000000 – 0x0000BE00 | 0x00004C00 19,456 (19 GB) |
MaxFileSize | REG_DWORD | 0x001F4400 – 0x7C004400 | 0x7BB04400 2,075,149,312 (1.933 GB) |
WarnFileSize | REG_DWORD | 0x00042400 – 0x7C004400 | 0x74404400 1,950,368,768 (1.816 GB) |
Office Version | The policy location for the registry entries is located in the following path in Registry Editor | The user preference location for the registry entries is located in the following path in Registry Editor |
---|---|---|
Outlook 2013 | HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\15.0\Outlook\PST | HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\Outlook\PST |
Outlook 2010 | HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\14.0\Outlook\PST | HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Outlook\PST |
Outlook 2007 | HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\12.0\Outlook\PST | HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Outlook\PST |
Outlook 2003 | HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\11.0\Outlook\PST | HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\Outlook\PST |
More Information
Follow these steps to configure the size limit for both the .pst and the .ost files.
Note The settings that are discussed in this article apply to both .ost and .pst files. If you modify these registry values, this can affect .ost files that are used with Cached Exchange Mode, with AutoArchive, and with .pst. files. If Outlook is configured to download shared folders, the contents of shared folders are stored in the local Offline Outlook Data (.ost) file. If the shared folders contain many items or large attachments, the size of the .ost file may grow significantly. Additionally, Outlook 2013 introduced support for Site Mailboxes. If an Outlook 2013 client is working in a Microsoft Exchange Server 2013/Microsoft SharePoint 2013 environment and is granted permission to a site mailbox, the site mailbox is automatically added to the Outlook 2013 profile. If Download Shared Folders is enabled, the site mailbox contents are synchronized to the local .ost file. This can result in the .ost file exceeding the set limit. For more information about the Download Shared Folders setting in Outlook, click the following article number to view the article in the Microsoft Knowledge Base:
Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
It is recommended that the values between the MaxFileSize registry entry and the WarnFileSize registry entry, and the values between the MaxLargeFileSize registry entry and the WarnLargeFileSize registry entry be at least 5 percent (%) so that internal processes are not hindered from continuing.
If the value of the MaxFileSize registry entry ever exceeds the ANSI 2 gigabyte (GB) limit on either the .pst or the .ost files, the value will be ignored to limit the size to 2 GB to prevent corruption. The default value for the WarnFileSizeregistry registry entry is calculated to be 95% of the MaxFileSize registry entry for a UNICODE file, and it remains at 1,950,368,768 bytes for small ANSI files.
Note You can set the UNICODE limits beyond the values that are listed in the table. However, we do not recommend doing this because performance can decrease.
If .ost files or .pst files reach the limit that is specified in the WarnFileSize or the WarnLargeFileSize registries, the compaction function is triggered to try to reduce the size of the file to a usable level. When the WarnFileSize or the WarnLargeFileSize limit is reached, e-mail messages cannot be sent (provided that sent e-mail messages are stored in the Sent Items folder), and items cannot be copied or moved within the file. If the file is an archive .pst file that is used for AutoArchive, the AutoArchive operation will fail. However, e-mail messages can be deleted or archived from a .pst or from an .ost file that is currently being used as the default delivery location.
The following are some of the errors that may occur when files reach the maximums specified in the registries:
Note The settings that are discussed in this article apply to both .ost and .pst files. If you modify these registry values, this can affect .ost files that are used with Cached Exchange Mode, with AutoArchive, and with .pst. files. If Outlook is configured to download shared folders, the contents of shared folders are stored in the local Offline Outlook Data (.ost) file. If the shared folders contain many items or large attachments, the size of the .ost file may grow significantly. Additionally, Outlook 2013 introduced support for Site Mailboxes. If an Outlook 2013 client is working in a Microsoft Exchange Server 2013/Microsoft SharePoint 2013 environment and is granted permission to a site mailbox, the site mailbox is automatically added to the Outlook 2013 profile. If Download Shared Folders is enabled, the site mailbox contents are synchronized to the local .ost file. This can result in the .ost file exceeding the set limit. For more information about the Download Shared Folders setting in Outlook, click the following article number to view the article in the Microsoft Knowledge Base:
982697 By default, shared mail folders are downloaded in Cached mode in Outlook 2010 and Outlook 2013
Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
322756 How to back up and restore the registry in Windows
- Click Start, and then click
Run. - In the Open box, type
regedit, and then click OK. - In the left pane, expand My Computer, and then expand HKEY_CURRENT_USER.
- Expand Software, and then expand
Policies. - Expand Microsoft, and then expand
Office. - Expand 11.0 for Outlook 2003, 12.0 for Outlook 2007, or 14.0 for Outlook 2010, or 15.0 for Outlook 2013, and then expand Outlook.
- Click PST, and then right-click
MaxFileSize in the right pane. - Click Modify, and then type the value in the Value data box.
- Click OK.
- Right-click WarnFileSize, and repeat steps 8 through 9.
- Right-click MaxLargeFileSize, and repeat steps 8 through 9.
- Right-click WarnLargeFileSize, and repeat steps 8 through 9.
- Click Start, click Run, type Regedit, and then click OK.
- In the left pane, expand following registry key:
For Outlook 2013HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\15.0\OutlookFor Outlook 2010HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\14.0\OutlookFor Outlook 2007HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\12.0\OutlookFor Outlook 2003HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\11.0\Outlook - Right click Outlook, point to New, and then click Key. (The screen shot for this step is listed below).
- Type PST, and then press ENTER. (The screen shot for this step is listed below).
- Right click PST, point to New, and then click DWORD value. (The screen shot for this step is listed below).
- Type MaxFileSize, and then press ENTER twice. (The screen shot for this step is listed below).
- In the Edit DWORD Value window, choose Decimal and type the value in the Value data box, and then click OK.
Note 1GB=1*1024*1024*1024byte; 1MB=1*1024*1024byte; 1KB=1*1024byte, the example below is for 1GB. (The screen shot for this step is listed below). - Repeat steps 3 through 7 to create another DWORD WarnFileSize.
- Repeat steps 3 through 7 to create another DWORD MaxLargeFileSize.
- Repeat steps 3 through 7 to create another DWORD WarnLargeFileSize, and then close the registry.
Note For mass deployment of these registry keys on end-user machines, the ORK tool can be used.
It is recommended that the values between the MaxFileSize registry entry and the WarnFileSize registry entry, and the values between the MaxLargeFileSize registry entry and the WarnLargeFileSize registry entry be at least 5 percent (%) so that internal processes are not hindered from continuing.
If the value of the MaxFileSize registry entry ever exceeds the ANSI 2 gigabyte (GB) limit on either the .pst or the .ost files, the value will be ignored to limit the size to 2 GB to prevent corruption. The default value for the WarnFileSizeregistry registry entry is calculated to be 95% of the MaxFileSize registry entry for a UNICODE file, and it remains at 1,950,368,768 bytes for small ANSI files.
Note You can set the UNICODE limits beyond the values that are listed in the table. However, we do not recommend doing this because performance can decrease.
If .ost files or .pst files reach the limit that is specified in the WarnFileSize or the WarnLargeFileSize registries, the compaction function is triggered to try to reduce the size of the file to a usable level. When the WarnFileSize or the WarnLargeFileSize limit is reached, e-mail messages cannot be sent (provided that sent e-mail messages are stored in the Sent Items folder), and items cannot be copied or moved within the file. If the file is an archive .pst file that is used for AutoArchive, the AutoArchive operation will fail. However, e-mail messages can be deleted or archived from a .pst or from an .ost file that is currently being used as the default delivery location.
The following are some of the errors that may occur when files reach the maximums specified in the registries:
- When you try to move items to a .pst or an .ost file that has reach the limit, you receive the following error message:Can't move the items. The file <path>\<filename>.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.
- When e-mail messages are delivered to a .pst or an .ost file that are using Cached Exchange Mode, and the file has reached the limit, the Mailbox Cleanup wizard launches.
Properties
Article ID: 832925 - Last Review: Sep 4, 2013 - Revision: 1
Microsoft Office Outlook 2003, Microsoft Office Outlook 2007, Microsoft Outlook 2010, Microsoft Outlook 2013