Differences

This shows you the differences between two versions of the page.

--- software:microsoft:outlook [2026/08/15 04:27] – superwizard
+++ software:microsoft:outlook [2026/08/15 04:30] (current) – superwizard
@@ Line 1: / Line 1: @@
+====== Outlook Desktop ======
+-------------------------------------------------------------------------------------------------------------------------------------------------\\
 ====== Outlook database repair ======
+<WRAP center round box >
+This is what i did:
+  * Check if these are .OST vs. .PST Files
+    * If these clients are using Microsoft 365, Exchange, or IMAP, their local file is an .OST (Offline Storage) file, not a .PST file. If that is the case, you do not need to deal with local file corruption at all:
+    * **Adjust the Sync Slider**: Go to Account Settings > Account Settings > Change Account and move the "Mail to keep offline" slider down from "All" to 1 Year or 6 Months.
+    * Delete the .OST: Close Outlook and delete the bloated .ost file. Outlook will automatically rebuild a clean, lightweight 10–15 GB OST file containing recent mail, while the rest of their 100 GB historical archive remains safely accessible in the cloud.
+</WRAP>
 You are hitting one of the most infamous brick walls in Windows desktop IT.
@@ Line 23: / Line 38: @@
     * Mount Them Simultaneously: Open all the smaller PST files in the client's Outlook profile (via File > Open & Export > Open Outlook Data File).
     * Result: The client still sees all 100 GB of their historical email organized in their left sidebar, but Outlook is reading 5x 20 GB files instead of 1x 100 GB file. This completely eliminates the underlying database engine crashes.
-  * Check if these are .OST vs. .PST Files
-    * If these clients are using Microsoft 365, Exchange, or IMAP, their local file is an .OST (Offline Storage) file, not a .PST file. If that is the case, you do not need to deal with local file corruption at all:
-    * **Adjust the Sync Slider**: Go to Account Settings > Account Settings > Change Account and move the "Mail to keep offline" slider down from "All" to 1 Year or 6 Months.
-    * Delete the .OST: Close Outlook and delete the bloated .ost file. Outlook will automatically rebuild a clean, lightweight 10–15 GB OST file containing recent mail, while the rest of their 100 GB historical archive remains safely accessible in the cloud.
 Enable Online Archiving: If they are on M365, enable In-Place Archiving on their account so old emails automatically move to an online archive mailbox instead of bloating local disk space.