Hi Anna,
Sorry for the delay in response to your query.
As per the issue description, you are getting Microsoft Visual C++ Runtime error after launching Acrobat Pro 9.
For Windows 7, please follow the steps in the following link for troubleshooting: https://helpx.adobe.com/acrobat/kb/runtime-error-roaming-profile-workflows.html
Acrobat Pro 9 is not supported on Windows 10 OS.
You can try to repair the Microsoft Visual C++ files in Control Panel\All Control Panel Items\Programs and Features
Highlight the Microsoft Visual C++ files, Right Click > select Change and then Choose Repair.
You have to repair all the listed Microsoft Visual C++ files.
Once you have repaired the files, please reboot the machine and check.
Please keep us posted with the results.
Regards,
Anand Sri.
[Moving the thread into Acrobat General Troubleshooting]