How to Fix Out of Memory or System Resources error in Outlook?

Hello Folks, we know how annoying it will be if you are receiving a sluggish response from an application that you daily use. Here we discuss MS Outlook error codes and messages that may appear while working in the application. More frequently than not, the Microsoft Outlook out of memory or system resources error might have popped up in Outlook 2019 / 2016 / 2013 / 2010 / 2007 user account when trying to open Outlook. This Outlook error appears when you have connected too many PST files in your Outlook account. 

Why Outlook Displays Out of Memory Error? – The Reason

When the user tries to connect too many PST files to Outlook 2019, 2016, 2013, 2010, 2007…, it may result in ‘Out of memory or system resources error in Outlook account’. Now, to understand the causes of the problem in a technical way, continue your reading.

In Microsoft Outlook, when the user tries to access the PST file in their Outlook account, it gives a specific part of the memory as a cache for each PST file added. This method helps in improving the performance of MS Outlook account directly. But the cause for this Outlook out of memory or system resources error is associated with the same technic. Microsoft Outlook has a certain limit in allocating the space to each mail account (or PST file added). Hence, when space reaches its limit, MS Outlook gives back the error message: “Out of memory or system resources in Outlook 2016.”

Other than this, the next case for this Outlook error is, damaged PST files. That is, other than the memory issue, PST file corruption is also an important factor for Outlook errors. Now we will move to the solution part according to the different causes of the issue.

Solution 1: Fix Microsoft Outlook Out of Memory or System Resources Error

The ScanPST.exe can solve PST data file issues to a small extent. Minor level issues can be fixed by repairing your Outlook Personal Storage PST data file from the Outlook account. But this may not help you in resolving Microsoft Outlook errors out of memory or system resources.

All Microsoft Outlook PST errors cannot be fixed by ScanPST.exe. But if you do a proper search on this Microsoft inbuilt utility, Inbox Repair Tool, you can see various facts. The ScanPST.exe can only fix minor corruption problems and fails most of the time with severe cases, and also you have to locate where is the Scanpst.exe is located. So, in such times, it is necessary to find a reliable and functioning application to resolve MS Outlook PST file issues. Here we discuss a perfect solution to fix Microsoft Outlook out of memory or system resources error without any data loss.

Solution 2: Best Option to Fix MS Outlook PST Errors & Issues

We comes with advanced software to resolve MS Outlook issues. SysTools Outlook PST Repair Tool can fix almost all PST data file problems and errors to a maximum extent. This application developed in a way that, it can recover all permanently deleted data items like emails, contacts, calendars, tasks, notes, journals, etc. easily without any loss. It can repair corrupted Outlook PST files that become inaccessible due to the appearance of various error codes and messages. The software avails many more functions and features which makes it the best suitable application in the market. 

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• Repair multiple Outlook PST / BAK data files together
• Recover data from encrypted PST (Password protected) files
• Remove SMIME / OpenPGP encryption from Outlook emails
• Advanced Search options to choose Outlook PST / BAK file
• Export data from Outlook file to PST, MSG, EML, PDF, HTML
• Option to save recovered Outlook data into Office 365 account directly
• Various PST management option to maintain the structure
• Option save selective data items from a PST as per user requirement
• Support for PST file from any Outlook versions like 2019, 2016, 2013, 2010, 2007….

How to Fix MS Outlook Error using Outlook Recovery Tools?

This Outlook Data Recovery Software provides a free demo edition of the application for the users for trying the tool before purchasing. This trial edition supports all features as in the full version software excluding a limitation in the Export function. The free demo version can help you to repair Outlook PST files without ScanPST and recover deleted data items from the PST file completely without any loss. It then provides a preview of fixed and retrieved data in the software panel. After viewing your data, you can export 25 items per folder from your PST file without any issues. To save data further, the user needs the full version license. Download the free version and try the software in your Windows system.

Solution 3: Manually Fix Outlook PST Error by Following the Steps.

From the standpoint of the amount of memory used by the PST file and the number of opened PST files in the Outlook account, two types of situations can result in Outlook giving out of memory error. Consider two situations for example to understand the situation. Now consider a user who has 20 PST files of 1 GB size opened in Outlook and another user with 45 PST files with 200 MB (smaller size file) and so. Here in both cases, they can reduce the number of actively opened PST files in their MS Outlook 2019 / 2016 / 2013 / 2010 / 2007, etc. account. That is, one can close those Outlook PST files which are not in use or required for the time. Two easy methods to fix Microsoft Outlook errors out of memory or system resources are discussed below:

1. Reduce Number of Opened PST Files in Outlook Account

1. In the MS Outlook account, go to the Mail navigation pane and right-click on the PST files and select Close command from the popup menu.
2. Go to File > Account Settings > Account Settings option. In the Account Settings dialog box, select to Data Files tab and click on the Remove button to disconnect the selected PST Files. 

2. Reduce Cache Memory Size of Each PST Data File

In case if you don’t want to remove your PST files and wish to keep them in Outlook account, but the Outlook error persists, follow this approach. To fix Microsoft Outlook out of memory or system resources error, the next thing you can do is to reduce the cache size (memory). By reducing the size of the cache memory space assigns to each PST file in your Outlook. Take the following steps:

1. First, close your MS Outlook account and click on Start Menu.
2. Type regedit in the search box enter it.
3. Now in the Registry Editor, browse as given below:

HKEY_CURRENT_USER\Software\Microsoft\Office\<version>\Outlook\PST

• Right-click on the PST key and select New > DWORD Value

• Name the newly generated value as UseLegacyCacheSize
• Enter the value data as 1

• In the end, close Registry Editor and restart your MS Outlook.

Now the Microsoft Outlook (2019 / 2016 / 2013 / 2010 / 2007 / 2003 / 2000) will be opening without any error message. Now Outlook sends receive error out of memory or system resources issues while opening will be resolved.

Conclusion:

Finding a solution to fix a technical error is not that difficult in the digital era. But the chance of getting the best perfect solution is difficult. Microsoft Outlook out of memory or system resources error is a rare error message that pops up when there are memory space allocation issues or when the PST data file gets damaged. Here in this blog, you can see solutions to fix the same. But instead of several manual solutions, there comes the importance of a trouble-free strategy. When considering the importance of the safety of Outlook data, we have also suggested the best tool used by many professionals.