# Syncthing crashing after updating to v1.27.1 / Windows 7 / runtime.asmstdcall() **URL:** https://forum.syncthing.net/t/syncthing-crashing-after-updating-to-v1-27-1-windows-7-runtime-asmstdcall/21248 **Category:** Support **Created:** [December 11, 2023, 9:13am UTC](https://forum.syncthing.net/t/syncthing-crashing-after-updating-to-v1-27-1-windows-7-runtime-asmstdcall/21248 "2023-12-11T09:13:47Z") **Posts on this page:** 20 **Page:** 1
### Author: ![uok](https://forum.syncthing.net/letter_avatar_proxy/v4/letter/u/e99b99/32.png) [@uok](https://forum.syncthing.net/u/uok) #### Post date: [December 11, 2023, 9:13am UTC](https://forum.syncthing.net/t/syncthing-crashing-after-updating-to-v1-27-1-windows-7-runtime-asmstdcall/21248/1 "2023-12-11T09:13:47Z")
Heads up, there is another bug 🐛 Today after automatically upgrading to v1.27.1 (last line in syncthing.log), Syncthing does not start again (Windows 7, x64, with service). Starting manually shows crash: ```plaintext Exception 0xc0000005 0x8 0x0 0x0 PC=0x0 runtime.asmstdcall() runtime/sys_windows_amd64.s:65 +0x75 fp=0x22fca0 sp=0x22fc80 pc=0x473dd5 rax 0x0 rbx 0x1a27f20 rcx 0x1a87ec0 rdi 0x7fffffdd000 rsi 0x22fea0 rbp 0x22fde0 rsp 0x22fc78 r8 0x0 r9 0x22fee0 r10 0x1a59a38 r11 0x21 r12 0x22fec0 r13 0x1 r14 0x1a27480 r15 0x0 rip 0x0 rflags 0x10293 cs 0x33 fs 0x53 gs 0x2b ``` ---
### Author: ![calmh](https://forum.syncthing.net/user_avatar/forum.syncthing.net/calmh/32/15311_2.png) [@calmh](https://forum.syncthing.net/u/calmh) #### Post date: [December 11, 2023, 9:23am UTC](https://forum.syncthing.net/t/syncthing-crashing-after-updating-to-v1-27-1-windows-7-runtime-asmstdcall/21248/2 "2023-12-11T09:23:09Z")
Yeah, [apparently](https://forum.syncthing.net/t/runtime-asmstdcall/21239) the update to a newer point release of Go tickles an issue on Windows 7, which is unsupported since Go 1.21. (We switched to Go 1.21 with the Syncthing 1.24.0 release in August, but apparently things kept trucking for a while longer.) Edit: [Go 1.21.5 is the breakage point](https://github.com/golang/go/issues/64622). ---
### Author: ![Work3d3](https://forum.syncthing.net/letter_avatar_proxy/v4/letter/w/f19dbf/32.png) [@Work3d3](https://forum.syncthing.net/u/Work3d3) #### Post date: [December 11, 2023, 9:41am UTC](https://forum.syncthing.net/t/syncthing-crashing-after-updating-to-v1-27-1-windows-7-runtime-asmstdcall/21248/3 "2023-12-11T09:41:09Z")
1.27.0 Working. Вisabled auto update for now Auto Upgrade Interval (hours) = 0 ps I hope they fix it for Windows 7 ---
### Author: ![calmh](https://forum.syncthing.net/user_avatar/forum.syncthing.net/calmh/32/15311_2.png) [@calmh](https://forum.syncthing.net/u/calmh) #### Post date: [December 11, 2023, 9:50am UTC](https://forum.syncthing.net/t/syncthing-crashing-after-updating-to-v1-27-1-windows-7-runtime-asmstdcall/21248/4 "2023-12-11T09:50:16Z")
This will not be fixed, sorry. Go, and hence Syncthing, now depends on some API that is just not present in Windows 7. ---
### Author: ![Jason7107](https://forum.syncthing.net/letter_avatar_proxy/v4/letter/j/5f9b8f/32.png) [@Jason7107](https://forum.syncthing.net/u/Jason7107) #### Post date: [December 11, 2023, 1:44pm UTC](https://forum.syncthing.net/t/syncthing-crashing-after-updating-to-v1-27-1-windows-7-runtime-asmstdcall/21248/5 "2023-12-11T13:44:42Z")
So how do we disable the auto-upgrade? My desktop runs Win-7 Pro, isn’t compatible with Win-10 or 11 and I don’t have the money to replace it. ---
### Author: ![calmh](https://forum.syncthing.net/user_avatar/forum.syncthing.net/calmh/32/15311_2.png) [@calmh](https://forum.syncthing.net/u/calmh) #### Post date: [December 11, 2023, 1:54pm UTC](https://forum.syncthing.net/t/syncthing-crashing-after-updating-to-v1-27-1-windows-7-runtime-asmstdcall/21248/6 "2023-12-11T13:54:13Z")
Right, so usually that would be in the settings, but if the auto upgrade is too agressive you need to prevent it from doing that prior to start-up. What I would do is set an environment variable system-wide, which will always override the other config stuff. Here [seems to be a guide on how to do that in Windows 7](https://www.nextofwindows.com/how-to-addedit-environment-variables-in-windows-7). You want to set a variable named `STNOUPGRADE` to the value `1` (or any non-empty value, afaik). ---
### Author: ![Jason7107](https://forum.syncthing.net/letter_avatar_proxy/v4/letter/j/5f9b8f/32.png) [@Jason7107](https://forum.syncthing.net/u/Jason7107) #### Post date: [December 11, 2023, 2:09pm UTC](https://forum.syncthing.net/t/syncthing-crashing-after-updating-to-v1-27-1-windows-7-runtime-asmstdcall/21248/7 "2023-12-11T14:09:34Z")
Okay - found it in the Config.xml
and we’re back up and running again. My Phone and Tablet thank you since they get fed from the ‘ancient’ desktop. ---
### Author: ![Hank](https://forum.syncthing.net/letter_avatar_proxy/v4/letter/h/f475e1/32.png) [@Hank](https://forum.syncthing.net/u/Hank) #### Post date: [December 11, 2023, 4:34pm UTC](https://forum.syncthing.net/t/syncthing-crashing-after-updating-to-v1-27-1-windows-7-runtime-asmstdcall/21248/8 "2023-12-11T16:34:46Z")
@Jason7107 I’m in the same boat (Win 7 SyncThing stopped). But I can’t find a 'config.xml. Could you elif please. ---
### Author: ![tomasz86](https://forum.syncthing.net/letter_avatar_proxy/v4/letter/t/96bed5/32.png) [@tomasz86](https://forum.syncthing.net/u/tomasz86) #### Post date: [December 11, 2023, 5:02pm UTC](https://forum.syncthing.net/t/syncthing-crashing-after-updating-to-v1-27-1-windows-7-runtime-asmstdcall/21248/9 "2023-12-11T17:02:15Z")
Please copy and paste `%LOCALAPPDATA%\Syncthing` into the address bar in Windows Explorer and press Enter. ---
### Author: ![Wal](https://forum.syncthing.net/letter_avatar_proxy/v4/letter/w/d6d6ee/32.png) [@Wal](https://forum.syncthing.net/u/Wal) #### Post date: [December 11, 2023, 5:09pm UTC](https://forum.syncthing.net/t/syncthing-crashing-after-updating-to-v1-27-1-windows-7-runtime-asmstdcall/21248/10 "2023-12-11T17:09:32Z")
Hello, after automatically upgrading this morning, Syncthing doesn’t work anymore with Windows 7. Reading this thread, I substituted the synthing.exe with the older syncthing.exe in the same folder, and it works again. I can’t update my Operating System from W7 to a newer version these days (months!), so I cant’ let syncthing upgrade in the next future. My questions are: 1. Will I have any trouble using Syncthing the next months without updating, e. g. security issues? 2. My other two systems are linux-based. Should I deactivate autoupgrading under Linux, too, to avoid incompabilities between the Linux versions and the (not updated) W7 version? 3. Any other hints do reduce trouble? Many thanks in advance. Best regards Wal ---
### Author: ![Jason7107](https://forum.syncthing.net/letter_avatar_proxy/v4/letter/j/5f9b8f/32.png) [@Jason7107](https://forum.syncthing.net/u/Jason7107) #### Post date: [December 11, 2023, 6:02pm UTC](https://forum.syncthing.net/t/syncthing-crashing-after-updating-to-v1-27-1-windows-7-runtime-asmstdcall/21248/12 "2023-12-11T18:02:36Z")
@Hank - file is located at C:\Users(user)\AppData\Local\Syncthing\config.xml My Wordpad will edit it - search for “autoUpgrade” The whole line will read “autoUpgradeIntervalH # autoUpgradeIntervalH” where # is any non-zero number
mine was set to 12 Change that number to 0 and save. Delete the ‘Syncthing.exe’ from the run directory and change ‘Syncthing.exe.old’ to ‘Syncthing.exe’ and you’ll be running the pre-update version. ---
### Author: ![Jason7107](https://forum.syncthing.net/letter_avatar_proxy/v4/letter/j/5f9b8f/32.png) [@Jason7107](https://forum.syncthing.net/u/Jason7107) #### Post date: [December 11, 2023, 6:05pm UTC](https://forum.syncthing.net/t/syncthing-crashing-after-updating-to-v1-27-1-windows-7-runtime-asmstdcall/21248/13 "2023-12-11T18:05:10Z")
I back-tracked the Syncthing on my desktop to 1.16.1 and it’s working with the Android version just fine. I don’t think it really cares what version is on what machine so long as the machines can see each other. ---
### Author: ![tomasz86](https://forum.syncthing.net/letter_avatar_proxy/v4/letter/t/96bed5/32.png) [@tomasz86](https://forum.syncthing.net/u/tomasz86) #### Post date: [December 11, 2023, 6:11pm UTC](https://forum.syncthing.net/t/syncthing-crashing-after-updating-to-v1-27-1-windows-7-runtime-asmstdcall/21248/14 "2023-12-11T18:11:25Z")
It does care but unless you are running an extremely old version, you should be fine for the upcoming months, if not years. ---
### Author: ![calmh](https://forum.syncthing.net/user_avatar/forum.syncthing.net/calmh/32/15311_2.png) [@calmh](https://forum.syncthing.net/u/calmh) #### Post date: [December 11, 2023, 7:33pm UTC](https://forum.syncthing.net/t/syncthing-crashing-after-updating-to-v1-27-1-windows-7-runtime-asmstdcall/21248/15 "2023-12-11T19:33:24Z")
> [@Wal](#): > > Will I have any trouble using Syncthing the next months without updating, e. g. security issues? That’s hard to predict. But your operating system isn’t getting security updates either any more, so this seems like an odd concern under the circumstances? ---
### Author: ![Wal](https://forum.syncthing.net/letter_avatar_proxy/v4/letter/w/d6d6ee/32.png) [@Wal](https://forum.syncthing.net/u/Wal) #### Post date: [December 11, 2023, 11:26pm UTC](https://forum.syncthing.net/t/syncthing-crashing-after-updating-to-v1-27-1-windows-7-runtime-asmstdcall/21248/16 "2023-12-11T23:26:02Z")
TouchĂ©! 😉 ---
### Author: ![mraneri](https://forum.syncthing.net/letter_avatar_proxy/v4/letter/m/b19c9b/32.png) [@mraneri](https://forum.syncthing.net/u/mraneri) #### Post date: [December 12, 2023, 3:21am UTC](https://forum.syncthing.net/t/syncthing-crashing-after-updating-to-v1-27-1-windows-7-runtime-asmstdcall/21248/17 "2023-12-12T03:21:25Z")
Perhaps syncthing could use some mechanism to identify what OS versions are compatible with future upgrades before those upgrades are done automatically. I have a system offline for a few days that is likely affected. Have to check up on what is that system is running. Yes I know windows 7 is beyond support. But we run some old hardware in some of these old systems that for valid reason is not easy to upgrade (and in some cases impossible
) Anyway just a thought. ---
### Author: ![pfg21](https://forum.syncthing.net/user_avatar/forum.syncthing.net/pfg21/32/3300_2.png) [@pfg21](https://forum.syncthing.net/u/pfg21) #### Post date: [December 12, 2023, 11:21am UTC](https://forum.syncthing.net/t/syncthing-crashing-after-updating-to-v1-27-1-windows-7-runtime-asmstdcall/21248/18 "2023-12-12T11:21:55Z")
I will assume quite a long time 🙂 until there are changes in the data exchange format, and they are quite stable. An outdated version of resilio or syncthing (can’t remember which one specifically) worked for quite a long time on WinXP. I’m leaving 1.27.0 and disabling updates. let’s see what the future holds. @calmh Maybe we should add in the description of version 1.27.0 that it is the “last that works on Windows 7”. ---
### Author: ![milo](https://forum.syncthing.net/letter_avatar_proxy/v4/letter/m/85e7bf/32.png) [@milo](https://forum.syncthing.net/u/milo) #### Post date: [December 12, 2023, 11:14am UTC](https://forum.syncthing.net/t/syncthing-crashing-after-updating-to-v1-27-1-windows-7-runtime-asmstdcall/21248/19 "2023-12-12T11:14:29Z")
Same problem. I’m syncing win10 to win7 and vice-versa, it no longer works . Is there a link to an older version to install to win7 machine or any other way? ---
### Author: ![er-pa](https://forum.syncthing.net/letter_avatar_proxy/v4/letter/e/90db22/32.png) [@er-pa](https://forum.syncthing.net/u/er-pa) #### Post date: [December 12, 2023, 11:35am UTC](https://forum.syncthing.net/t/syncthing-crashing-after-updating-to-v1-27-1-windows-7-runtime-asmstdcall/21248/20 "2023-12-12T11:35:02Z")
The previous releases are available at [Releases · syncthing/syncthing · GitHub](https://github.com/syncthing/syncthing/releases/) Click on the desired version and you’ll find the code as well as the executables for a dozen of platforms, including Windows. Just make sure to set `--no-upgrade` as argument, or it may automatically upgrade again. ---
### Author: ![terry](https://forum.syncthing.net/letter_avatar_proxy/v4/letter/t/b9e5f3/32.png) [@terry](https://forum.syncthing.net/u/terry) #### Post date: [December 12, 2023, 11:56am UTC](https://forum.syncthing.net/t/syncthing-crashing-after-updating-to-v1-27-1-windows-7-runtime-asmstdcall/21248/21 "2023-12-12T11:56:49Z")
I had to edit the config file to change the prerelease flag from true to false, saved then reopened St using an earlier version (1.27). The go into settings and told it to no longer do any updates (on W7 devices). It will then sync as before [Next page](https://forum.syncthing.net/t/syncthing-crashing-after-updating-to-v1-27-1-windows-7-runtime-asmstdcall/21248.md?page=2)