Crash during Android Phone sync

[thbenner]

Hello,

FFS 11.28 (64 bit) crashes during the sync phase. The app simply closes without any message There is no log file from today.

Windows 10
Phone: Xiaomi poco m4 pro (Android 11,MIUI 13.0.10) connected via MTP



How to fix that?

Thomas

[Zenju]

Just in case you're using the portable FFS version: Try the local installation instead, which will add registry keys to have a crashing application actually crash with a crash dump. Rather than this new Windows anti-feature of "silently discarding the evidence", and pretending the app "just closed".

[Plerry]

If that does not do the job, try creating a trace.
https://freefilesync.org/faq.php#trace

[thbenner]

Although the local version is installed, there seems to be no dump. I have sent the trace file to zenju.

[Zenju]

According to the trace file, there should be multiple dmp files on your desktop:

C:\Users\benne\Desktop

FreeFileSync_x64.exe.11400.dmp
FreeFileSync_x64.exe.15256.dmp
FreeFileSync_x64.exe.17060.dmp
FreeFileSync_x64.exe.21484.dmp
FreeFileSync_x64.exe.22916.dmp
FreeFileSync_x64.exe.26724.dmp
FreeFileSync_x64.exe.9352.dmp

And there's also the following dump file. Looks like some service is crashing, probably related to the other crashes:

C:\ProgramData\Microsoft\Windows\WER\Temp\WER8811.tmp.dmp

[thbenner]

Thank you very much. Have sent a link to the dmp files by mail.

[Zenju]

I messed up: I don't have the appropriate debugging symbols anymore. Can you install the latest 11.28 and see if you can still reproduce the crash?

[thbenner]

Done, the file FreeFileSync_x64.exe.17420.dmp is in the same directory.

[Zenju]

Fixed! Turns out the MTP device proposes a buffer size of only 1 byte, which is unexpected for FFS and it deliberately crashes. The reason for this size is that the file in question also has only 1 byte as content, and the "optimal buffer size" is trimmed to the file size for whatever reason.

https://www.mediafire.com/file/2ok67v8p9cl54zw/FreeFileSync_11.29_%255BBeta%255D_Windows_Setup.exe/file

[thbenner]

Thank you for the fast fix!!! How to get back to the donation version? Can I put the key file somewhere or should I wait till 11.29 is appearing on the donation page?

[azure55]

Fixed! Turns out the MTP device proposes a buffer size of only 1 byte, which is unexpected for FFS and it deliberately crashes. The reason for this size is that the file in question also has only 1 byte as content, and the "optimal buffer size" is trimmed to the file size for whatever reason.

https://www.mediafire.com/file/2ok67v8p9cl54zw/FreeFileSync_11.29_%255BBeta%255D_Windows_Setup.exe/file

This also resolved the issue on mine, thanks!

[wobaozi]

I also encountered this situation, the mobile phone is red rice K40 Mi Miui13 Android 12, the computer system is Windows11,FreeFileSync is 11.29 installed version.
Can you tell me how to solve this problem?