Too many connections of PST files to Outlook 2016, 2013, 2010, 2007 may lead to “Out of memory or system resources” error in Outlook 2016. As per the rule, when users access PST file in Microsoft Outlook, it gives a specific part of memory as a cache. This improves the performance of Outlook. It has a certain limit in providing the space to each mail account. Therefore, when the space reaches its limit, Outlook gives back an error i.e. “Out of memory or system resources.” Another reason behind this issue is damaged PST file. Consider this query to understand the problem faced by a user in a clear way. After this, we will move to the solution part.
“I am using Outlook 2016 in my system. From the last two days, I am getting “Outlook 2016 out of memory” this issue. I have tried many methods to fix this and now I am tired of trying the manual solution. I need to prepare a presentation using some of the PST files, however this problem interrupting my work. Therefore, I am looking for a trouble free solution to fix this issue as soon as possible.”
Best Possible to Methods to Rectify the Error
Resolution 1: Lessens the Number of Outlook PST Files
There could be two types of situations in this case. One is that a user has open 20 PST files of 1GB size. Other is a user has open 45 PST files of very small size like 200 MB or so. In any case, users can reduce the number of actively opened files. This means close those PST files, which are not required. There are two very easy methods for this:
- In the navigation pane of MS Outlook, make a right click on PST files and then choose “Close” from the context menu.
- Or you can go to File >> Account Settings. Now, in Account Setting dialog box, go to the tab “Data Files” and click on “Remove” for the disconnection of PST data files.
Resolution 2: Decrease Memory Cache Size of Each PST
This is another manner to handle MS Outlook 2016 out of memory or system resources issue. In case you want to keep the PST in Outlook and the error persists, you can opt for this approach. Follow these steps for the accomplishment of this trick:
- Firstly, initiate Outlook and go to “Start”
- Now, in the search box, you need to type “regedit” and then press “Enter”
- In Registry Editor, browse to below mentioned keys, “HKEY_CURRENT_USER” > “Software” > “Microsoft” > “Office” > “version” > “Outlook” > “PST”
- After this, you need to right click on the “PST” key and then, select “New” >> “DWORD Value”
- You need to name the resultant value as “UseLegacyCacheSize”
- Next, specify the value data as “1”
- Finally, close the Registry Editor and then restart MS Outlook
Resolution 3: Try to Rectify the Problem via Scanpst.exe
Users can repair the damaged PST file using this technique. It is useful if users do not have various PST files connected to MS Outlook and still they are getting this issue. This indicates something wrong with the PST files like minor errors or corruptions. Scanpst.exe is an inbuilt utility, designed for repairing the unhealthy PST files. For the execution of repairing process, users need to follow certain steps as mentioned below:
- In the first step, you need to close Outlook
- Now, go to the location according to the version of Outlook you are using:
- For Outlook 2010 Version: C:\Program Files\Microsoft Office\OFFICE14 folder
- For Outlook 2013: C:\Program Files\Microsoft Office\OFFICE15 for Outlook 2013
- After this, double click on the Scanpst.exe
- In the next step, click on Browse, for selecting the Outlook data file
- Hit on Start
- The repairing process will begin in case it get any error message
When the Need of Third-Party Tool Arises?
Instead of several manual solutions, there is a need of a trouble free strategy. This is due to certain reasons such as complicated manual trick, security of the data, etc. Even scanpst.exe is not reliable because it is capable to fix only minor corruptions. Ultimately, users have to opt for an automated solution to fix major corruptions. Considering the importance of safety of the data, we are going to introduce a tool used by many professionals.
Note: It is always recommended to use a trustworthy software.
Solution 4: Third Party Tool
Outlook PST file recovery software which is capable to handle any kind of corruption in PST files. This is designed in a way that it can fix any level of corruption from Outlook data files. The software brings forth several features making the repairing task easy and quick. Users can even convert the files after the recovery into different file formats. Moreover, the utility comes up with a very simple interface and compatible with all Windows versions.
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