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Zalo is a popular platform for free calling and messaging, widely utilized by numerous users. However, many users encounter unexpected login issues.
On December 9, 2019, Zalo PC and Web users faced login problems, receiving an "Invalid information" message, despite entering correct details. Meanwhile, Zalo Web users found themselves stuck at a loading icon for extended periods.
To help users troubleshoot these login issues, we invite you to explore the solutions outlined below.

If you're unable to login to Zalo on your PC, it may be due to an incompatible version with your operating system. Here are some solutions to resolve the error:
If the version of Zalo installed on your computer is outdated, it could be a cause for your login issues. We recommend downloading and installing the latest version of Zalo. Click one of the buttons below to update:
Download Zalo for Windows Download Zalo for Mac
If updating Zalo doesn’t resolve the issue, you can access Zalo Online through your web browser. Click the button below:
Should the previous methods fail, consider using Zalo on your mobile device. The mobile version tends to be more stable as it was the original platform. Download the app using the links below:
Download Zalo for iOS Download Zalo for Android
A weak or unreliable network connection can hinder your ability to login to Zalo. First, try accessing other applications like Facebook to see if they function correctly. If other apps are working, the issue may lie within Zalo itself.
Error 2028 often occurs when using a non-native version of Zalo, which may prevent login. To fix this, refer to the article on resolving Zalo Error 2028.
We hope these solutions help you successfully log in to Zalo and enhance your experience. For additional help, you may refer to the following articles:
Good luck!
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Sophia -
Great information! Just a suggestion though, maybe include a video tutorial? It could help those who learn better visually.
Chloé -
Is this problem common? I’d like to know if there’s any way to prevent it from happening again in the future.
Liam123 -
Wow! I didn’t expect this to be so easy. I didn't know about the password reset option! Thanks!
John Doe -
Can anyone explain the two-step verification process? I want to make sure my account is secure
Ava -
Honestly, Zalo’s login problems can be really annoying. Your post made me laugh though. Thanks for the lighthearted approach!
Grace -
Thanks for sharing your personal experience. I feel more confident now that I know where to find the solution
MikeTech -
Not sure why some people have issues with Zalo. I haven’t faced any login problems. Maybe it’s device-specific
Alice -
This was so useful! I had given up hope but managed to log in again. Thanks a million!
Henry -
Can anyone explain the connection issues? I seem to have fast internet but Zalo is still being slow
Luke IT -
I just reset my password, and now I can log in! Thank you for this helpful guide
Milo the Cat -
I didn’t know that my phone settings could affect Zalo! I’ll definitely check them out now. Thanks for the heads-up!
PandaPaws -
LOL, I thought I would never be able to log in again. Glad I found this article, made my day!
Lucas -
This is a lifesaver! I was about to uninstall Zalo because I couldn't log in for so long. Thank you
Tommy -
Can someone help me? I followed the steps, but still no success. It's driving me mad
Sarah89 -
Awesome post! I appreciate you breaking everything down into easy steps. Makes troubleshooting much less stressful
Emily -
Thanks for this article! I have been struggling to log in to Zalo for days, and your tips really helped me. Keep up the great work
Olivia -
Your instructions were super clear. I think I’ll share this with my friends who also use Zalo. They often complain about login issues too
James -
Thank you so much! I was stuck for hours, but now I can finally use Zalo again
Riley -
Is there a way to recover my account if I've completely forgotten my password? Any help would be appreciated!
Hana -
I thought I was the only one having login troubles! It's nice to know there’s a solution. Will try it now
Jack -
What if I’ve tried all these steps and still can’t log in? Does anyone else have similar issues? I’m really frustrated.
Cathy -
I’m curious, is it safe to log in to Zalo on public Wi-Fi? Would love to hear your thoughts
Sammy -
Why doesn’t Zalo just fix these issues? It's so frustrating to have to go through all these steps
Quang vn -
I thought I was tech-savvy until I faced this login issue! Your article saved me!
SunnySide -
I tried cleaning the cache and it worked perfectly! It's amazing how such a small thing made a big difference. Great advice!