How to Fix Barclays Error Code mc003?

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In this post, we are going to cover the error code mc003 with the Barclays app and website. As per our research, the error code mc003 occurs with Barclays when they are going through some system maintenance/issue so always check the Barclays server status first before going into any troubleshooting. If Barclays servers are up without any issues then try troubleshooting the app and your device to check if it helps.

If you are currently struggling with this error while using the Barclays app or website then below you can find all the details related to this error.

Barclays Error Code mc003

How to Fix Barclays Error Code mc003?


Fix 1: Check Barclays System Status

Most of the time it’s the Barclays system maintenance that is behind the error so first you should check Barclays system status to find if they are going through any maintenance work, or if they are having some issues with their system. To check Barclays system status you can follow below given suggestions.

  • Go to Barclays status page and check if there are any ongoing maintenance/issues with their system. If yes then you need to wait till things get back to normal.
  • Visit barclays on Twitter to check if there is any recent tweet about any system maintenance/issues. Also check if users are complaining about different issues to Barclays, if yes then it also indicates system maintenance/issues.
Barclays Error Code mc003

Fix 2: Troubleshoot Your Device And App

  • If you are using your smartphone to access Barclays app then restart your phone.
  • If you are using Barclays app then clear the app cache by going into app settings for your Android phone. For iPhone users, simply offload the Barclays app, and reinstall it.
  • Make sure your internet is working, you can try using any other apps on your device to confirm if your internet is working.
  • If you are using the Barclays website from your browser then go to your browser incognito/private mode and try accessing Barclays website from there. If it fixes the issue then clear your browser cache, or try using any alternate browser.

Fix 3: Contact Barclays

If the Barclays status page is showing no problem with their system, and you are also done with the above troubleshoots then you should directly contact the Barclays support team.

To contact Barclays visit here https://www.barclays.co.uk/help/contact-us/, and tap on ‘Complaints‘ to find the different ways to contact Barclays. For better assistance make sure you explain the error in detail and share all the required information.


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Rahul Choudhary is a technology and troubleshooting expert. He gives his expert opinion on different technology trends and provides troubleshooting guides for different apps, websites, & consumer hardware products. He graduated in BA English Honours from the University Of Delhi, and later he learned HTML and WordPress. He also did a certificate course in Hardware and Network Troubleshooting , and a certificate course in Computer Architecture.