Fix Outlook Error 0x80040900: Send/Receive Issue Solved

Real-Life Scenario:

Instant Solution to Solve Outlook error 0x80040900

1. Firstly, download and install the DRS Outlook PST Repair Tool.
2. Now, click on Open to add corrupted or damaged PST files. 
3. Choose several Recovery Modes and other options. Click OK.
4. After that, you can preview all your recovered Outlook PST files.
5. Lastly, click Save and choose a different Saving Format from the list.

Why Does Occur 0x80040900 Error in Outlook?

• Incorrect incoming or outgoing server settings.
• Due to a damaged or oversized PST data file.
• Firewall or antivirus is blocking the server connection.
• Furthermore, there is a corrupt Outlook profile.

Method 01: Check and Correct Outlook Account Settings

1. First, open Outlook and choose File → Account Settings.
2. After that, select your email and click Change.
3. Then, verify incoming & outgoing server details.
4. Now, check the Port Number & Encryption (SSL/TLS).
5. Afterwards, click Test Account Settings.
6. If server details are incorrect, Outlook will fail to sync and trigger this error.

Method 02: Disable Firewall to Resolve Outlook Error 0x80040900

1. Some security tools block Outlook ports (25, 465, 587, 993, 995).
2. Disable the firewall & test sending/receiving emails.
3. If it works, whitelist Outlook.exe in the firewall settings.

Method 03: Repair Outlook Data File Using SCANPST

SCANPST only fixes minor corruption. It fails if the PST file is large or severely damaged. Here is how you can perform it:

1. Primarily, close Outlook on your system.
2. Now, run SCANPST.EXE (Inbox Repair Tool).
3. Then, browse and select the PST file.
4. Further, click Start to begin the repair.
5. Finally, restart Outlook after repair.

Method 04: Create a New Profile to Solve Outlook Error 0x80040900

1. First of all, open the Control Panel and choose Mail → Show Profiles.
2. Now, click Add → Create a fresh profile.
3. Configure the account again.
4. In the end, set it to always use this profile.

Limitations of Manual Fixes

• SCANPST may crash on large PST files (above 2GB).
• Manual repair does not recover missing or deleted emails.
• Re-adding a profile requires server re-sync, takes time.
• Advanced users only – not suitable for beginners.
• Also, if PST is highly corrupted, manual repair won’t work at all.

Verified Tool to Solve Outlook Error 0x80040900

If your Outlook PST file is severely corrupted, you can use the reliable DRS Outlook PST Recovery Tool. This tool offers several recovery modes either Standard, Advanced, and Deep. You can see all the recovered data before saving it. With its simple and user-friendly interface, every user can easily use it without needing technical skills. Additionally, you can fix Outlook error 0x8004010F and more.

Detailed Steps to Fix Outlook Send/Receive Error 0x80040900

1. Primarily, download and install the DRS Outlook PST Recovery.
2. Now, click on Open to add your corrupted/damaged Outlook PST file.
3. Then, choose several Recovery Modes and other options. Click OK.
4. After that, you can preview all your Recovered Outlook PST files.
5. Lastly, click on the Save button and select the Saving Format.

Conclusion

In this technical blog post, we explored several methods to solve Outlook error 0x80040900. Outlook error 0x80040900 mainly appears due to wrong account settings or data corruption inside the PST file. Basic troubleshooting can solve the issue, but if the PST file is damaged, professional repair software is the safest choice. The DRS PST Recovery Tool not only fixes the error but restores complete mailbox data without losing a single email.

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