From 36ab611e6965b405c9a85698e85f88445d156987 Mon Sep 17 00:00:00 2001 From: Gertie Reynell Date: Fri, 16 Jan 2026 02:53:33 +0800 Subject: [PATCH] Add 'Outlook performance issues in a Cached Exchange Mode ost or .pst file Outlook Microsoft Learn' --- ...st-or-.pst-file-Outlook-Microsoft-Learn.md | 21 +++++++++++++++++++ 1 file changed, 21 insertions(+) create mode 100644 Outlook-performance-issues-in-a-Cached-Exchange-Mode--ost-or-.pst-file-Outlook-Microsoft-Learn.md diff --git a/Outlook-performance-issues-in-a-Cached-Exchange-Mode--ost-or-.pst-file-Outlook-Microsoft-Learn.md b/Outlook-performance-issues-in-a-Cached-Exchange-Mode--ost-or-.pst-file-Outlook-Microsoft-Learn.md new file mode 100644 index 0000000..5bccd0a --- /dev/null +++ b/Outlook-performance-issues-in-a-Cached-Exchange-Mode--ost-or-.pst-file-Outlook-Microsoft-Learn.md @@ -0,0 +1,21 @@ +If it can help in your case, you can purchase it to disable the trial limitations. VCF and EML files can also be imported into other mail ways to fix Outlook data file errors clients and programs supporting these files. Recovery Toolbox for Outlook can repair corrupted PST files after the incorrect recovery of ScanPST.exe. + +Once you’ve used this app, launch your Outlook app, and it should work as expected. For Outlook not opening problems, you can use Kernel Outlook PST Repair to fix the corrupt PST file and import it to restore mailbox items. This innovative Outlook PST recovery software repairs large PST files without compromising their integrity. It is is an advanced tool that gives you the ability to fix all major errors in your Outlook data files. Besides, it allows you to save the repaired PST file in multiple formats, like HTML, RTF, PST, etc, and even to the cloud, Microsoft 365 destination. If your Outlook version is outdated, that may be why you can’t open it. + +As a result my pst-file was corrupted and my outlook could no longer be started/opened.This tool fixed PST-file. Last, you should replace the damaged file to a recovered one or merely add the recovered file to the list of data files in Outlook. The size of free ways to fix Outlook data file errors space on the disk must be at least twice as much as the size of the .pst file you are repairing. The red color of the value in the Required free disk space field informs you that there is not enough space on the disk. You will be able to move on to the next recovery step (the Next button will become available), if the program finds more than one item in the source .pst file. Recovery Toolbox for Outlook uses Microsoft Outlook for creation of new PST files. + +For more information, please see Access to Microsoft 365 email and applications by audience. For information about Microsoft 365 storage quotas, please see Microsoft 365 storage quotas and information. The folder may have been deleted or the server where the folder is stored may be unavailable. You don't have appropriate permission to perform this operation. MAPI does not validate that a provider's DLL that it is requested to load is registered correctly in MapiSVC.inf or even that it comes from the local machine. + +Be aware that if you are connecting to an Exchange Server mailbox, your mailbox or your email messages are already being scanned by antivirus software on the server. For more information, see You may experience application pauses if you have a large Outlook data file. Optionally, if you have a Microsoft Exchange online archive, you can move items to that archive or create retention policies to automatically dispose of older items. + +You can run the Inbox Repair Tool (scanpst.exe) to scan your Outlook data files and repair errors. Are you having trouble starting Outlook or receiving "Cannot start Microsoft Outlook. Cannot open the Outlook window" error messages? We can fix the problem for you, or you can use the troubleshooting steps we're providing below to help resolve these startup issues. If your Outlook is working fine now, it means add-ins are the culprit. But it is important to identify the specific add-in that was causing trouble. To identify that, check the add-ins one at a time and restart Outlook. + +After October 14, 2025, Microsoft will no longer provide free software updates from Windows Update, technical assistance, or security fixes for Windows 10. Your PC will still work, ways to fix Outlook data file errors but we recommend moving to Windows 11. + +We hope that you are now relieved and would like to hear from you if the article has helped you. Drop us a comment below if you have anything to say. Download Remo Repair Outlook (PST) tool & install it on your PCs. Then, just follow the simple steps explained below to fix the PST file after the Outlook crash. Once the PST file is repaired, it can be imported to Outlook and you can access all your ways to fix Outlook data file errors Outlook items in the same way as it was originally. + +Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. In this window you can check the status, the number of failed requests (under Req/Fail), and which mailbox is experiencing the issue. Outlook email accounts are provided to employees, students, alumni, retirees, and for generic accounts. + +Repair a profile in OutlookIn Outlook, choose File.Choose Account Settings >Account Settings.On the Email tab, choose your account (profile), and then choose Repair. ...Follow the prompts in the wizard, and when you're done, restart Outlook. + +The built-in [ways to fix Outlook data file errors](https://office365emailfix.blogspot.com/2025/10/fix-outlook-not-sending-or-receiving.html) back-off mechanisms in the indexing component of Windows Search or WDS pauses the indexing of Outlook data when the system is under heavy use. The easiest way to let the indexing finish is to leave Outlook running overnight.Additionally, you can reduce performance issues by running Outlook in Cached Exchange Mode. In this mode, Windows Search or WDS searches the local copy of the mailbox instead of the mailbox content on the server. I even reduced mailboxes sizes and that didn't help, I setup a new user (albeit existing PC but new windows profile), and he is having the same issues. If the mailboxes open automatically after removing them and restarting Outlook, they may be auto mapped. This setting can be changed by an Exchange admin by submitting a request via Jira and including the usernames of the client and the usernames of the mailboxes that need to be removed. \ No newline at end of file