TSM Tool Pro won't start: what to do
If TSM Tool Pro won't start, 9 times out of 10 the cause is antivirus, a missing Visual C++ / .NET runtime or an outdated build. Less often it is the network (server unreachable) or a broken install. Work through the checklist below in order — it usually takes 5–10 minutes and no Windows reinstall.
Quick diagnosis by what you see
| Symptom | Likely cause | Fix |
|---|---|---|
| Nothing happens after a double‑click | antivirus removed or blocked the file | restore it from quarantine, add the folder to exclusions |
| Error about MSVCP/VCRUNTIME .dll | no Visual C++ x64 | install Visual C++ Redistributable x64 |
| .NET Framework error | no .NET 4.8 | install .NET Framework 4.8 |
| Window opens then closes | old or corrupted build | download the latest from tsm-tool.com |
| Opens but login fails | network or credentials | see how to log in |
Checklist in order
- Add the TSM Tool Pro folder to your antivirus exclusions and restore any quarantined file.
- Install Visual C++ Redistributable x64 and .NET Framework 4.8, then reboot.
- Download the latest build from the official site tsm-tool.com (download guide).
- Run as Administrator from a normal folder (not Desktop\Downloads inside a ZIP).
- If it opens but won't sign in, follow how to log in.
Windows 10/11 x64 is recommended; older systems can crash. When you only need the tool for one job, renting a TSM Tool Pro account gets you a working, current build with credentials right away.
FAQ
Why won't TSM Tool Pro open?
Most often antivirus blocked the file or Visual C++ / .NET is missing.
Do I need to reinstall Windows?
Almost never — antivirus exclusions, the runtimes and a fresh build are enough.
TSM Tool Pro closes right after it opens — what now?
Download the latest build from tsm-tool.com and run it as Administrator.
Does TSM Tool Pro run on Windows 7?
Windows 10/11 x64 is recommended; older systems may be unstable.