Getting frequent AAE -9173 Errors, but no other errors ...
even, when playing back multiple audio tracks without any inserts at all.

Changing the hardware buffer size does not fix the error .
For a few times I manage to re-start playback, then Pro Tools goes to the state,
where the only option is to re-launch the program .

Sorry, I'm repeating myself, but ...

Even playing back a session with only a click track gives AAE -9173 errors and the only way to resolve this is to relaunch Pro Tools and after that it does the same thing, again and again .

Running out of cpu - power and should increase hw - buffer-size or remove native plugins, etc .

I have gone through various optimizations gathered around here and there .
But the system is plain to say ... useless .

My projects are on a external Seagate USB2 - drive .

PC Specs ...

Windows 10 Pro Version 20H2 .
Motherboard MSI Z390 A-Pro .
System Memory 32Gb .
Processor Intel(R) Core(TM) i3-9100F CPU @ 3.60GHz 3.60 GHz
Graphics MSI GT710

Windows updates disabled as well as Windows Defender .
So, nothing should be running in the background .

BIOS tweaked as guided by Avid's specs .
Hyperthreading , C-State, Turbo Boost, SpeedStepping all disabled .

CPU Affinity tweak done
Intel Management engine --> power option unchecked

I can surely tell it's not a plugin issue,
for I can't even play back a session with no plugins / inserts .

I have no problems running REAPER on this computer .
Not a glitch, whatsoever ...

 

Last Updated : November 8, 2019
Products Affected : Pro Tools, Pro Tools HD, Pro Tools Ultimate

The steps below will guide you on how to troubleshoot and resolve this issue:

1. Check the Pro Tools System Requirements if they are met.
2. Optimize your system for Pro Tools, follow instructions from Computer Optimization Guides - Mac and Windows
3. Isolate the plug-ins that might cause your AAE -9173 error. Instructions can be found from How to isolate plug-ins causing high CPU usage.
4. Optimize your interface for Pro Tools. You may need to contact your hardware manufacturer regarding this.
5. Update Pro Tools to the latest version.
6. Test your session with your built-in sound device.
7. Backup and delete the Pro Tools Preferences. Instructions for Mac and Windows.
8. Check your session on a different user or computer.

If still receiving the same error even after following the steps above. You may refer to this article Troubleshooting steps to reduce AAE -9093, -9173, and -6101 Errors on Mac for advanced troubleshooting. Attachment(s)

https://avidtech.my.salesforce-sites.com/pkb/articles/en_US/Knowledge/Pro-Tools-AAE-9173

 

Last edited: Mar 17, 2025 at 9:53 PM

I got this problem before
For fix that
Delete pro tools preference , search on internet for find preferences path
with this , PT will be goes back to defaults
This problem sometimes happen for some wav files in PT


Extra NOTE :
if you are using AAX Unlocker R2R with Ultimate PT 2021.7
you should never upgrade to latest PT ... AAX unlocker will not works
Unlocker is only for 2021.7 version

 

Last edited: Mar 17, 2025 at 10:25 PM