TL;DR — Quick Summary

Fix SUA IMSS database migration errors between computers: corrupt backup, version mismatch, missing files, and path configuration on the new machine.

Error When Migrating the SUA Database Between Computers

Migrating the SUA between computers is necessary when replacing hardware, reformatting, or centralizing operations. Migration errors can block access to IMSS movement history and delay employer-employee contribution payments.

Prerequisites

  • SUA latest version installed on both computers.
  • USB drive or network folder for backup transfer.
  • Administrator permissions on the new computer.
  • Run in compatibility mode for Windows 8 or 7 if using Windows 10/11.

Migration Checklist

#StepComputerStatus
1Update SUA to latest versionSource☐
2Generate backup from UtilitiesSource☐
3Copy backup to USB/networkSource☐
4Install SUA (same version)Target☐
5Configure compatibility and permissionsTarget☐
6Restore backupTarget☐
7Verify employer registration and employeesTarget☐
8Generate test determinationTarget☐

Common Causes and Solutions

1. Different SUA Version

The new computer has a different SUA version than the backup.

Solution:

  1. Check the version in Help > About on both computers.
  2. Install the exact same version on the new computer.
  3. If the IMSS version is newer, install the old version first, restore, then update.

2. Corrupt or Incomplete Backup

The backup file was damaged during transfer.

Solution:

  • Verify the file size is consistent (typically 2-50 MB depending on employee count).
  • Regenerate the backup on the source computer.
  • Use a different USB drive or transfer over the network to rule out media issues.

3. Unregistered System Components

The new computer lacks the required OCX components for SUA.

Solution:

# Run as Administrator in CMD
regsvr32 C:\Windows\SysWOW64\THREED32.OCX
regsvr32 C:\Windows\SysWOW64\MSCOMCT2.OCX
regsvr32 C:\Windows\SysWOW64\MSCOMCTL.OCX

4. Insufficient Folder Permissions

SUA cannot write to its installation folder.

Solution:

  1. Right-click C:\SUA > Properties > Security.
  2. Grant Full Control to the Users group.
  3. Uncheck Read-Only in folder properties.

5. Damaged Database After Migration

Data was corrupted during transfer.

Solution:

  1. Run Utilities > Repair Database.
  2. If unsuccessful, restore the backup again.
  3. As a last resort, download the issuer file from IDSE to rebuild the database.

Important SUA Paths

PathContent
C:\SUA\Main program installation
C:\SUA\BD\Database with employees and movements
C:\SUA\Respaldos\Automatically generated backups
C:\SUA\Reportes\Generated reports (determinations, certificates)
C:\SUA\Temp\Temporary files (safe to delete)