Duration: 1:53

15 views

0

Here are some ways to fix Outlook Error code 0x80040900:

1. **Restart your computer.** This may seem like a simple solution, but it can often fix minor errors.
2. **Check your internet connection.** Make sure that you are connected to the internet and that your connection is stable.
3. **Repair your Outlook PST file.** If your Outlook PST file is corrupted, it can cause the 0x80040900 error. To repair your PST file, you can use the Inbox Repair Tool (Scanpst.exe).
4. **Update your drivers.** Outdated drivers can cause a variety of problems, including the 0x80040900 error. To update your drivers, you can use the Device Manager or a third-party driver update tool.
5. **Uninstall and reinstall Outlook.** If all else fails, you can try uninstalling and reinstalling Outlook. This will remove any corrupted files or settings that may be causing the error.

i. Here are some tips to optimize your internet for Outlook on Windows:

* **Use a wired connection instead of Wi-Fi.** A wired connection is always going to be more reliable than Wi-Fi, so if you can, use it.
* **Close any unnecessary programs while you're using Outlook.** Programs that are running in the background can use up your internet bandwidth, which can slow down Outlook.
* **Disable any add-ins that you're not using.** Add-ins can also use up your internet bandwidth, so if you're not using them, disable them.
* **Update your drivers.** Outdated drivers can cause a variety of problems, including slow internet speeds. Make sure that your drivers are up to date.
* **Restart your router.** Sometimes, a simple restart can fix internet problems.
* **Check your internet speed.** If you're still having problems, you can check your internet speed to see if it's up to par. You can use a speed test website to do this.
* **Contact your internet service provider.** If you've tried everything else and you're still having problems, you can contact your internet service provider for help.

ii. Here are some things you can do if the Inbox Repair Tool is not working:

1. **Make sure that you are using the correct version of the Inbox Repair Tool.** The Inbox Repair Tool is available for both 32-bit and 64-bit versions of Windows. Make sure that you are using the version that matches your version of Windows.
2. **Make sure that the PST file that you are trying to repair is not in use by another program.** If the PST file is in use, the Inbox Repair Tool will not be able to access it. Close any programs that might be using the PST file and then try again.
3. **Make sure that the PST file is not corrupted beyond repair.** If the PST file is too badly corrupted, the Inbox Repair Tool may not be able to fix it. In this case, you may need to recover your data from a backup or from a previous version of the PST file.
4. **Try using a different version of the Inbox Repair Tool.** There are a number of different versions of the Inbox Repair Tool available online. If one version does not work, try another one.
5. **Contact Microsoft Support for help.** If you have tried all of the above and the Inbox Repair Tool is still not working, you can contact Microsoft Support for help.