Title: Decrypt backup failure Last modified: August 21, 2016 --- # Decrypt backup failure * [ant999](https://wordpress.org/support/users/ant999/) * (@ant999) * [12 years, 11 months ago](https://wordpress.org/support/topic/decrypt-backup-failure/) * I have uploaded my encrypted file to …/public_html/wp-content/plugins/wponlinebackup/ tmp/decrypt as instructed because the file size is greater than 6MB so cannot upload via the web browser. * Steps * > Entered Encrypted password > Left encryption type as default AES128[Recommended] > Pressed Decrypt Backup * Result Get the following error: * The backup could not be decrypted; the following error was encountered during decryption: Partially read 4472788 of 8388608 bytes from encrypted data file for decryption. * What can I do to fix this? Your help is much appreciated. * [http://wordpress.org/extend/plugins/wponlinebackup/](http://wordpress.org/extend/plugins/wponlinebackup/) Viewing 7 replies - 1 through 7 (of 7 total) * Plugin Author [Online Backup](https://wordpress.org/support/users/driskell/) * (@driskell) * [12 years, 11 months ago](https://wordpress.org/support/topic/decrypt-backup-failure/#post-3888356) * Hi ant999, * This usually means the file is incomplete and smaller than it should be. That is, it didn’t download properly when it was downloaded, or it didn’t finish uploading. * Jason * Thread Starter [ant999](https://wordpress.org/support/users/ant999/) * (@ant999) * [12 years, 11 months ago](https://wordpress.org/support/topic/decrypt-backup-failure/#post-3888484) * Thanks for your reply. I repeated the download of the backup. No errors were reported. I then uploaded the encrypted file via FTP to the ../decrpyt location I specified above, there were no errors with this either and the number of bytes uploaded matched the number of bytes of the original file. The problem is with the decryption it seems. It only partially reads the file which is why get the error: * The backup could not be decrypted; the following error was encountered during decryption: Partially read 286676 of 8388608 bytes from encrypted data file for decryption. * I’ve tried several times. Is there anything else I can do without having to disable encryption? * Plugin Author [Online Backup](https://wordpress.org/support/users/driskell/) * (@driskell) * [12 years, 11 months ago](https://wordpress.org/support/topic/decrypt-backup-failure/#post-3888491) * One way to check it is this issue, could you go to Activity Log, and check the size of the backup (Backup Size, not total size) and then compare it to the one that was downloaded? We’ve seen specific browsers report successful download even though it wasn’t, and comparing file size is best way to check. * If you can, upgrade to 3.0.0 of the plugin – we re-wrote all the download stuff into a Local Backups feature. The way the downloads work is different in 3.0.0 too to workaround the above issue with browsers only getting half the file and sometimes reporting successful. * If we still have issues in 3.0.0 it’ll be easier to diagnose and fix too. * Thanks, * Jason * Thread Starter [ant999](https://wordpress.org/support/users/ant999/) * (@ant999) * [12 years, 11 months ago](https://wordpress.org/support/topic/decrypt-backup-failure/#post-3888537) * Thanks Jason. I have just checked the Activity log. The backup size is 555.28 KiB and total size is 423MB. I am not sure how to compare the backup size to what was downloaded as the .enc file only shows the total size which is 416MB on disk. I have just upgraded to 3.0.1 so will repeat the process again and let you know. * Plugin Author [Online Backup](https://wordpress.org/support/users/driskell/) * (@driskell) * [12 years, 11 months ago](https://wordpress.org/support/topic/decrypt-backup-failure/#post-3888558) * Hi ant999, * You may be looking at an online backup and not a normal backup as it’s not normal for it to compress 423MiB into 555 KiB. * Let us know how 3.0.1 goes. It has new method of downloading backup files so should give you the full one and then decryption should work perfectly when you upload it again. * Jason. * Thread Starter [ant999](https://wordpress.org/support/users/ant999/) * (@ant999) * [12 years, 10 months ago](https://wordpress.org/support/topic/decrypt-backup-failure/#post-3888564) * Hi, with version 3.0.1 if decrypt via Local Backups then choose one of the backups stored on the server, I get the following error: * “The activity failed: The file integrity check failed. The file may be corrupt or the encryption details validated but were actually incorrect (there is a small chance of this happening.)” * The good thing is I can backup locally without encryption with 3.0.1 so this should work. * Oh and regarding * > You may be looking at an online backup and not a normal backup as it’s not normal for it to compress 423MiB into 555 KiB. * You were quite right! I was looking at online backup not local. I am not sure if the backup size matched the downloaded .enc file size as the file has been overwritten since. * Plugin Author [Online Backup](https://wordpress.org/support/users/driskell/) * (@driskell) * [12 years, 10 months ago](https://wordpress.org/support/topic/decrypt-backup-failure/#post-3888575) * Hi ant999, * We’ll be releasing 3.0.2 shortly which should fix this issue for you. If not, just let us know. * Thanks, * Jason Viewing 7 replies - 1 through 7 (of 7 total) The topic ‘Decrypt backup failure’ is closed to new replies. * ![](https://s.w.org/plugins/geopattern-icon/wponlinebackup_7192a1.svg) * [Online Backup for WordPress](https://wordpress.org/plugins/wponlinebackup/) * [Frequently Asked Questions](https://wordpress.org/plugins/wponlinebackup/#faq) * [Support Threads](https://wordpress.org/support/plugin/wponlinebackup/) * [Active Topics](https://wordpress.org/support/plugin/wponlinebackup/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/wponlinebackup/unresolved/) * [Reviews](https://wordpress.org/support/plugin/wponlinebackup/reviews/) * 7 replies * 2 participants * Last reply from: [Online Backup](https://wordpress.org/support/users/driskell/) * Last activity: [12 years, 10 months ago](https://wordpress.org/support/topic/decrypt-backup-failure/#post-3888575) * Status: not resolved