Error backup site collection

Question

Hi everyone,

I am trying to backup a site collection in sharepoint 2016, via the shell or the web interface... and this is not working..
I am received this log message:

Error backing up site http://mysite/.... . System.ComponentModel.Win32Exception (0x80004005): The parameter is incorrect
at Microsoft.SharePoint.CoordinatedStreamBuffer.SPCoordinatedStreamBufferOnFile.EnsureStream()  

the command line is like

Backup-SPSite http://portal.globalsp.com/sites/test -path d:\temp\test.bak

Plus the backup seems to start but it is stopping at few megabytes...
Anyone know how to resolve this, I don't see any information about this error anywhere ?

Thank you very much

Answer 1

what is the command you used for the backup ?seems like the parameter you are using is incorrect. make sure you have proper permissions and then open SharePoint Management Shell as admin and run the below command and let us know the outcome.

Backup-SPSite http://portal.globalsp.com/sites/test -path d:\temp\test.bak  

https://learn.microsoft.com/en-us/powershell/module/sharepoint-server/backup-spsite?view=sharepoint-ps

Thanks & Regards,

Answer 2

Hi @Raphael ,

This error is more related to .Net Framework exception.

Please try to backup other sites to check if others occur the same issue.

In addition, open the ULS Logs file with ULSViewer for more information.

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Answer 3

Not sure if the Identity parameter will help, I have used with the -Identity like below and it works fine for me.

Backup-SPSite -Identity http://mypc/sites/MySP2016SiteCollection/ -Path E:\MySiteCollection.bak

Even for the restore, you can have a look below, it worked for me.

https://www.spguides.com/sharepoint-backup-restore/