Viruses, improper ejection of the USB drive, or file system errors can corrupt the hidden activation files on the portable dongle. In this case, the dongle might have lost its stored hardware information entirely or have garbled data.
Autodata 345 portable versions are often locked to the first computer they were installed or first run on. If you take the USB dongle to another PC (e.g., from the office PC to the workshop laptop), the hardware fingerprints will differ, and Error 345 will appear.
If Error 345 persists and you cannot resolve it, consider migrating to alternative automotive data platforms that do not rely on finicky portable hardware locking: Viruses, improper ejection of the USB drive, or
| Software | Key Feature | Protection Method | |----------|-------------|-------------------| | AutoData Online | Official cloud version | Username/password – no dongle | | ALLDATA Repair | US-market focused | Online subscription | | Mitchell 1 | Comprehensive diagnostics | Software-based licensing | | TIS (Toyota/BMW/etc.) | Manufacturer-specific | VIN-based access | | Workshop Software (various) | Third-party management | Cloud or local USB (better drivers) |
Migrating to an online service eliminates hardware mismatch errors entirely. When you first install or activate Autodata 345
When you first install or activate Autodata 345 on a portable drive, the software scans your computer’s unique components:
This unique "fingerprint" is then written to a hidden file on the dongle. Every time you launch Autodata, the software compares: This unique "fingerprint" is then written to a
If these do not match exactly, you get Error 345.
Sometimes, Autodata phones home to verify the license. Blocking this can prevent secondary checks that trigger Error 345.
This prevents online hardware validation mismatches.
This is a sensitive but necessary point. Many "portable" versions of Autodata 345 circulating online are cracked or repackaged. These versions often use a software emulator (virtual dongle) or a deliberately mismatched hardware lock file. Error 345 in this context indicates that the crack is defective, the emulator driver is not loaded, or you have mixed files from different crack teams.