{"id":3288,"date":"2026-07-23T12:04:34","date_gmt":"2026-07-23T06:34:34","guid":{"rendered":"https:\/\/www.nettigritty.com\/kb\/?p=3288"},"modified":"2026-07-23T12:04:34","modified_gmt":"2026-07-23T06:34:34","slug":"how-to-fix-error-0x80042108-in-microsoft-outlook","status":"publish","type":"post","link":"https:\/\/www.nettigritty.com\/kb\/mail\/how-to-fix-error-0x80042108-in-microsoft-outlook\/","title":{"rendered":"How to fix error 0x80042108 in Microsoft Outlook"},"content":{"rendered":"

Error 0x80042108<\/strong> occurs in Microsoft Outlook when it cannot connect to the incoming (POP3 or IMAP) mail server. It’s typically a connection timeout rather than a login\/authentication failure \u2014 Outlook simply can’t reach the server on the configured port.<\/p>\n

Here’s how to fix it:<\/p>\n

\n

Step 1: Check Your Internet Connection<\/strong><\/h3>\n
    \n
  1. Confirm you have a stable internet connection by browsing to any website.<\/li>\n
  2. If you’re on Wi-Fi, try switching to a wired connection or a different network to rule out local connectivity issues.<\/li>\n<\/ol>\n
    \n

    Step 2: Verify Your Account Settings<\/strong><\/h3>\n
      \n
    1. In Outlook, go to File<\/strong> > Account Settings<\/strong> > Account Settings<\/strong>.<\/li>\n
    2. Select your account and click Change<\/strong>.<\/li>\n
    3. Confirm the following against your mail provider’s current settings:<\/li>\n<\/ol>\n
        \n
      • Incoming server<\/strong> (POP3\/IMAP) hostname and port<\/li>\n
      • Outgoing server<\/strong> (SMTP) hostname and port<\/li>\n
      • Encryption method<\/strong> (SSL\/TLS)<\/li>\n<\/ul>\n
          \n
        1. Click Test Account Settings<\/strong> to confirm the connection works.<\/li>\n<\/ol>\n
          \n

          Step 3: Disable Antivirus or Firewall Temporarily<\/strong><\/h3>\n

          Third-party antivirus and firewall software can block Outlook’s connection to the mail server.<\/p>\n

            \n
          1. Right-click your antivirus icon in the system tray and select the option to disable it temporarily.<\/li>\n
          2. Restart Outlook and check if the error persists.<\/li>\n
          3. If the error goes away, add Outlook as an exception in your antivirus\/firewall settings rather than leaving protection off.<\/li>\n<\/ol>\n
            \n

            Step 4: Start Outlook in Safe Mode<\/strong><\/h3>\n

            Add-ins can sometimes interfere with the mail connection.<\/p>\n

              \n
            1. Close Outlook.<\/li>\n
            2. Press Windows + R<\/strong>, type outlook.exe \/safe<\/code>, and press Enter<\/strong>.<\/li>\n
            3. If Outlook connects normally in safe mode, go to File<\/strong> > Options<\/strong> > Add-ins<\/strong>, disable add-ins one by one, and restart normally between each to find the culprit.<\/li>\n<\/ol>\n
              \n

              Step 5: Repair Your Outlook Installation<\/strong><\/h3>\n
                \n
              1. Open Control Panel<\/strong> > Programs and Features<\/strong>.<\/li>\n
              2. Find Microsoft Office<\/strong> (or Microsoft 365<\/strong>) and click Change<\/strong>.<\/li>\n
              3. Choose Quick Repair<\/strong> and click Repair<\/strong>.<\/li>\n
              4. If the issue persists, run Online Repair<\/strong> instead \u2014 it takes longer but fixes deeper installation issues.<\/li>\n<\/ol>\n
                \n

                Step 6: Repair the PST\/OST File<\/strong><\/h3>\n

                A corrupted data file can also trigger this error.<\/p>\n

                  \n
                1. Close Outlook.<\/li>\n
                2. Locate the Inbox Repair Tool (Scanpst.exe)<\/strong>, usually found in the Office installation folder (e.g., C:\\Program Files\\Microsoft Office\\root\\OfficeXX<\/code>).<\/li>\n
                3. Run Scanpst.exe<\/strong> and browse to your PST or OST file.<\/li>\n
                4. Click Start<\/strong> to scan and repair any errors found.<\/li>\n<\/ol>\n
                  \n

                  Step 7: Create a New Outlook Profile<\/strong><\/h3>\n

                  If none of the above works, the existing profile may be corrupted.<\/p>\n

                    \n
                  1. Close Outlook.<\/li>\n
                  2. Open Control Panel<\/strong> > Mail<\/strong> > Show Profiles<\/strong>.<\/li>\n
                  3. Click Add<\/strong>, create a new profile, and set it as the default.<\/li>\n
                  4. Reopen Outlook using the new profile and re-add your email account.<\/li>\n<\/ol>\n
                    \n

                    Prevention Tips<\/strong><\/h3>\n
                      \n
                    • Keep antivirus and firewall exceptions configured for Outlook to avoid repeated blocks.<\/li>\n
                    • Avoid sending or receiving emails with very large attachments (20 MB+) where possible.<\/li>\n
                    • Periodically compact your PST\/OST files to keep them healthy.<\/li>\n
                    • Keep Outlook and Windows updated to the latest patches.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"

                      Error 0x80042108 occurs in Microsoft Outlook when it cannot connect to the incoming (POP3 or IMAP) mail server. It’s typically a connection timeout rather than a login\/authentication failure \u2014 Outlook simply can’t reach the server on the configured port. Here’s how to fix it: Step 1: Check Your Internet Connection Confirm you have a stable […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-3288","post","type-post","status-publish","format-standard","hentry","category-mail"],"_links":{"self":[{"href":"https:\/\/www.nettigritty.com\/kb\/wp-json\/wp\/v2\/posts\/3288","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.nettigritty.com\/kb\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.nettigritty.com\/kb\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.nettigritty.com\/kb\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.nettigritty.com\/kb\/wp-json\/wp\/v2\/comments?post=3288"}],"version-history":[{"count":1,"href":"https:\/\/www.nettigritty.com\/kb\/wp-json\/wp\/v2\/posts\/3288\/revisions"}],"predecessor-version":[{"id":3289,"href":"https:\/\/www.nettigritty.com\/kb\/wp-json\/wp\/v2\/posts\/3288\/revisions\/3289"}],"wp:attachment":[{"href":"https:\/\/www.nettigritty.com\/kb\/wp-json\/wp\/v2\/media?parent=3288"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.nettigritty.com\/kb\/wp-json\/wp\/v2\/categories?post=3288"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.nettigritty.com\/kb\/wp-json\/wp\/v2\/tags?post=3288"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}