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--- faq:email:outlook_unable_to_use_tls_after_windows_update_kb5018410 [2022/10/21 15:35] – vikki
+++ faq:email:outlook_unable_to_use_tls_after_windows_update_kb5018410 [2022/10/21 22:47] (current) – [I) Revert/Uninstall the Cumulative Update - KB5018410] vikki
@@ Line 3: / Line 3: @@
 ====== Outlook cannot send and receive email with SSL/TLS configuration after Windows Update (KB5018410) ======
-Since Oct 11, 2022, we received several reports from clients who have performed Cumulative Update for Windows 10 Version 21H1 (KB5018410) are experiencing issues on sending and receiving emails on Ms Outlook with SSL/TLS or STARTTLS enabled.
+Since Oct 11, 2022, we received several reports from clients who have performed Cumulative Update for Windows 10 (KB5018410) are experiencing issues on sending and receiving emails on Ms Outlook with SSL/TLS or STARTTLS enabled.
 Typical error messages displayed for this issue include:
@@ Line 23: / Line 23: @@
 |{{:faq:email:troubleshooting:ssl-connection-err:kb5018410.png?600|}}|
+----
 ===== Solutions =====
-==== 1. Revert/Uninstall the Cumulative Update - KB5018410 ====
+==== I) Revert/Uninstall the Cumulative Update - KB5018410 ====
 You will be able to use SSL/TLS/STARTTLS encryption for SMTP/IMAP/POP3 after uninstalling the KB5018410 update.
@@ Line 54: / Line 56: @@
 |{{:faq:email:troubleshooting:ssl-connection-err:solution-05.png|}}|
-==== 2. Temporarily disable SSL/TLS/STARTTLS and wait for next Windows update ====
+Once you have restarted your PC, you will be able to connect your SMTP/IMAP/POP3 with SSL/TLS/STARTTLS connection without errors.
+**Optional: You can pause Windows updates at Settings > Windows Update and wait for the next update available (after KB5018410), or download and install [[http://download.microsoft.com/download/F/2/2/F22D5FDB-59CD-4275-8C95-1BE17BF70B21/wushowhide.diagcab|Microsoft's wushowhide.diagcab]] from [[https://answers.microsoft.com/en-us/windows/forum/all/where-do-you-download-wushowhidediagcab/c53dc53c-a413-42ef-b2cc-0a587f421a93|this page]] to temporarily hide the KB5018410 update. You can refer to [[https://www.tenforums.com/tutorials/8280-hide-show-windows-updates-windows-10-a.html|this guide]] on how to hide a Windows update (and show it later once the new update is available).
+----
+==== II) Temporarily disable SSL/TLS/STARTTLS and wait for next Windows update ====
+Another alternate solution is to switch SSL/TLS/STARTTLS to None while waiting for the next Windows update  to rectify this issue, which should usually be available in a month.
+You can change the Outlook setting at File > Account Settings > Manage profiles > Email Accounts... > Double-click on the email account > More Settings:-
+For IMAP users:\\
+^Incoming server (IMAP):| 143 |
+^Use the following type of encrypted connections:| Auto (or None) |
+^Outgoing server (SMTP):| 587 |
+^Use the following type of encrypted connections:| Auto (or None) |
+For POP3 users:\\
+^Incoming server (POP3):| 110 |
+^This server requires an encrypted connection (SSL/TLS):| NO (Uncheck) |
+^Outgoing server (SMTP):| 587 |
+^Use the following type of encrypted connections:| Auto (or None) |

AGNX

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