There is more than one possible cause for this issue:
Hard drive low on space
During the backup process there are temporary files being created that are taking space on the hard drive. If your hard drive space is low, then the backup will be halted when the disk is full. Try freeing up 1-2 GB of space on your hard drive by deleting unused temp files and documents. You can access your local temp files by typing in %temp% in the Run box from your Windows Start menu. If necessary, you can also temporarily move some non-program files to an external hard drive or flash drive to free up space. Also empty your Recycle Bin as well and then reboot the machine to refresh the memory.
An issue with a file or folder in your database supplemental files
You can ensure if this is your issue by detaching and renaming your database. When you reopen your database it will reattach and create a new set of supplemental files folders. Attempt the backup again, if it succeeds then this is your issue. Use the following steps:
- Close ACT!.
- Click the Windows® Start button, and then click Run. The Run dialog box appears.
- Type actdiag (for ACT! 2007 and later) or act8diag (ACT! 2006) in the Open field, and then click OK. The ACT! Diagnostics tool appears.
- Click the Database option in the left navigation tool bar. The Database List appears.
- Click the rectangle to the left of the desired database.
- Note the path of your database by scrolling right to view the Database File Location column.
- Click the Actions menu, and then click the
Detach Database option. The following Detach Database message appears.
- Click Yes. The following Detach Database
- Click OK. Close The ACT! Diagnostics tool
- Launch Windows Explorer (or My Computer).
- Browse to the location you noted in step six.
- There are two files you must create a copy of and then rename the copy; the .ALF and the .ADF. If your database is named Contacts they will be Contacts.alf and Contacts.adf. You can simply add a 1 before the file extension.
- Once you have renamed the files launch ACT!. You will
see a ACT! message similar to the following.
- Click OK. The Open dialog box appears.
- Click the ACT! Database (*.ADF) option from the Files of type drop down.
- Browse to the location you noted in step six, click the
renamed .adf file and then click Open. The following ACT!
- Click OK. When the database has been updated the
following ACT! message appears.
- Click OK to open your database.
Attempt to create a back up of your renamed database. If successful
this is your issue.
You will need to use a process of elimination to identify which file(s) or folder(s) are causing the issue. Move all the folders contained in the old supplemental files to your new supplemental files . It is recommended that you do this one folder at a time and then attempt to create another back up to eliminate those files or folder. Continue this until you have all folders moved. If after moving a folder your backup fails move the folder back to the old supplemental files folders, create a new folder named the same in the new supplemental files, and copy all the files to the new folder. Test the back up again.
When completed you can detach and rename your database back to the original name if desired. Follow the steps above. You will also need to rename the supplemental files with the same name as the database. If your database is named Contacts then your supplemental files will be named Contacts-database files.