What It Takes to Target an A+ Nextcloud Security Rating
Fix common Nextcloud scan findings with current updates, HTTPS and HSTS, precise reverse-proxy trust, and checks against the public server.
Sometimes MoMo wallet users will have an error where they cannot log in to MoMo, cannot deposit or withdraw money, or can log in but the account shows 0 VND. When these errors occur, it may be due to an Internet connection error or a system error.
In general, e-wallets will have errors during use. One of the common errors is unsuccessful payment by the linked bank when scanning the QR code, 4G connection error, error of not being able to load the page, etc. Below are details on how to fix MOMO errors that you can use to fix your MOMO e-wallet error .
Instructions for fixing MOMO errors
The MOMO payment failure error is quite common, the first thing you need to do is check the payment source. When you are sure your payment source has a balance, re-scan the payment QR code.
Sometimes there will be an error when paying via bank link. You need to go to MOMO e-wallet to deposit money. After depositing money, select the payment source as MOMO wallet to quickly complete the transaction.
Currently, connection errors often occur on MOMO. If you are using 3G/4G, please switch to wifi network or turn off mobile data and turn it back on to quickly reload the page.

Connection error - Connection lost
Many users see that their MOMO account has a balance showing only zero, many people cannot even withdraw or deposit money into their MOMO account. However, this error can only be fixed through the system. so you will receive the message:
"The MoMo system is under maintenance and will be completed as soon as possible. MoMo commits that customers' accounts and money are absolutely safe. We sincerely apologize for this experience.
Currently, the MoMo Customer Care system is receiving and will respond to customers immediately. Hope you feel secure and wait for the announcement from MoMo!".
Account error shows 0 VND
Fix common Nextcloud scan findings with current updates, HTTPS and HSTS, precise reverse-proxy trust, and checks against the public server.
Back up Nextcloud’s files and MariaDB together, schedule encrypted Restic snapshots with cron, and verify recovery without risking the live server.
Configure Nextcloud SSE for the storage that needs it, protect encryption keys, and measure transfer and CPU impact before encrypting existing files.
Connect Nextcloud’s file search to Elasticsearch, index document contents, and choose a setup that fits your server and security needs.
Configure Nextcloud to remove deleted files after a defined retention period, schedule background jobs reliably, and avoid commands that purge every user’s trash.
Run Nextcloud’s OCC repair safely, preview the database changes, and check why the warning might remain.
Allow larger Nextcloud browser uploads by aligning PHP, Nginx or Apache, temporary storage, and timeout settings—and verify which limit is blocking the file.
Set the PHP memory limit Nextcloud actually uses, restart the right service, and confirm the 512 MB setting in Admin Overview.
Mount a compatible object-storage bucket in Nextcloud using its S3 backend, with the right endpoint, credentials, access scope, and verification steps.
Safely move a Linux Nextcloud data directory to an external drive using a persistent UUID mount, maintenance mode, a verified copy, and the original-path symlink.