I wonder why this is happening. I am getting all x(random) hours the Windows notification that syncing failed. It started a long time ago and never went away. Before that I never had any issue
However as far I see sync works fine beside this and it’s probably only temporary thing what happens here. But I cannot find any solution to this. My logs look like this. Anyone any idea?
Does the error appear every day or just here and there?
The service is working fine on our end as of now. It may be possible that there we’re short downtime / maintenance when you were receiving this error.
It may be possible that a software running on your computer may interfere with your connection to the server.
Have you checked if this issue persists with a different internet connection? (you can try a phone hotspot or a VPN)
A workaround with be to disable automatic syncing
I would love to deactivate sync but as I tried all favorites and other stuff was gone >.>
Have absolutely no idea what software could or would cause this - I am on my own server and connected by local ip.
I can try it via nordvpn - had an issue with docker which also was solved by vpn connection - no idea why. I was only rarely able to pull images then switched from windows to kubuntu and since then it was gone
Oh I forgot to mention it is happening everyday
I am not sure but I think it is absolutely not a server side problem.
I was just troubleshooting another issue doing nslookup(s) for any domain names which resulted in 2 timeouts and a valid answer. Maybe this issue is related to this.
I found out nslookup caused my computer to try xxx.xxx.fritz.box adresses which are not used.
Searching more I found adding another . to the adress stopped this behavior - e.g.
nslookup google.de.
I found a way to do this permanently but I have absolutely no clue why this happens. It is called a search domain or DSN suffix. Never heard of this and never had an issue with dns resolving.
The way I did
Seems like that fixed my problem 
nahhhhh no way, just had the message again and log says
11.07.2025 08:30:07 ProtobufRPC Warning Server at URL https://clientapi.myteamspeak.com/synchronization responded: 401
nearly days without but it’s still there
right now I got other errors? Any ideas?
|22.07.2025 16:21:09|ProtobufRPC|Warning|Error contacting URL https://clientapi.myteamspeak.com/synchronization: Canceled: SSLConnection||
|22.07.2025 16:21:58|UIHelpers|Info|setClientVolumeModifier: 21 10||
|22.07.2025 16:31:09|ProtobufRPC|Warning|Error contacting URL https://clientapi.myteamspeak.com/synchronization: Canceled: Read||
|22.07.2025 16:34:44||Info|Memory usage: 89.51 MiB||
|22.07.2025 16:36:09|ProtobufRPC|Warning|Error contacting URL https://clientapi.myteamspeak.com/synchronization: Canceled: Read||
|22.07.2025 16:46:09|ProtobufRPC|Warning|Error contacting URL https://clientapi.myteamspeak.com/synchronization: Canceled: Read||
|22.07.2025 16:49:44||Info|Memory usage: 89.20 MiB||
|22.07.2025 16:51:10|ProtobufRPC|Warning|Error contacting URL https://clientapi.myteamspeak.com/synchronization: Canceled: Read||
|22.07.2025 16:58:56||Info|successfully downloaded revocation list for accounting||
|22.07.2025 16:58:57||Info|successfully downloaded revocation list for myteamspeak id||
|22.07.2025 17:01:09|ProtobufRPC|Warning|Error contacting URL https://clientapi.myteamspeak.com/synchronization: Canceled: SSLConnection||
If TS3 Client sync is activated I am getting this error several times a day :
27.05.2026 13:34:01 ProtobufRPC Warning Server at URL https://clientapi.myteamspeak.com/synchronization responded: 400
The requests are idendical but one time it it 200 and the other time 400:
Request:
POST https://clientapi.myteamspeak.com/synchronization HTTP/1.1
Accept: */*
Connection: close
Content-Length: 1120
Content-Type: application/ts3cloud
Host: clientapi.myteamspeak.com
User-Agent: cpp-httplib/0.11.1
Raw
.requestServerItems
$4936afd0-3514-4a0e-9dce-0b5b33c69e52.\x96..$6def187e-d3a3-3058-0242-80c0f4dbc251.L
$22f64257-c763-2975-c415-c3d5865543a1.$4d94cf9c-87a6-1f30-2046-9652b137edba.L
$40874935-0143-d8cd-07f9-8c0365ca5891.$6622c12f-9d5c-0faf-00aa-031419d00e5c.L
$4c2eece0-8e35-809f-2bd1-69c83b3b3c84.$1d4f7228-30b5-7622-0717-898ce2d700d8.L
$57dd7710-0e16-aa6d-3f59-caa728bf1039.$6a2ab0d0-4d0a-7cce-e2d3-269d0608e74b.L
$87fd9ec8-ca7a-9908-5efb-66d84efe6faa.$d250788c-e77b-8625-b57c-ed790c21397c.L
$be7346e2-d198-e6d3-96f8-673172015548.$f0f6d9cb-1704-e30c-663c-f4d22cb8bda1.L
$ddfed610-3db2-9d1b-d1ae-714a837a6a92.$56ad2263-d3f0-5911-db57-aff6dcde913e.L
$ec42465f-31f3-e867-0911-3a872ff48478.$757ae9f9-b059-c374-4d53-f13dc8162ff8.v...$97d8b58f-c6bb-69cd-8a8b-c4d6d1b92d5c.L
$90307a7e-3dca-9fbb-df9e-aee863f234f6.$9989c851-37ef-f8a9-6b42-5308b81574c7.v...$8ee174da-52ce-a6b8-3067-1514aac4962c.L
$604e61bc-f7d7-4d6d-97e1-e475eefcba47.$46ef7cf1-da56-354e-2c9c-df8116399b60.v...$ba14ec57-fdcd-f1f8-6fd2-2caae239830e.L
$11111111-aaaa-aaaa-aaaa-aaaaaaaaaaaa.$5fe8a1d2-f807-a772-a42e-4187e71e8eac.$ee40eebf-64ae-4ec3-9db5-cd01bf7aba60
Answer:
HTTP/1.1 400 Bad Request
Date: Wed, 27 May 2026 13:34:01 GMT
Content-Type: application/json
Content-Length: 83
Connection: close
via: 1.1 google
cf-cache-status: DYNAMIC
set-cookie: __cf_bm=Wq3aAboVKP4r_XNnojbATKvPCD7L5ssvtduQdEMIjWY-1779888841.690948-1.0.1.1-KBUqNvInVTst23K2viNWORhg3tUue.EWZWdGPVRBTCCFvciVW0BOc48EryKJ3C9nKxvqcjxAU3HAE36mTfMW5n2CfngGoSRekhE3UoYZvkjJDG2CnNIx.1j2gkBAibX7; HttpOnly; SameSite=None; Secure; Path=/; Domain=myteamspeak.com; Expires=Wed, 27 May 2026 14:04:01 GMT
set-cookie: _cfuvid=izClxcRKy_YrtLQ81J2l2St.DZ9yXc34exBA3o3T0lM-1779888841.690948-1.0.1.1-Q3WaR6VKkZeZsNnvJheQ3tvFGUiphe09Swc82VdgnPY; HttpOnly; SameSite=None; Secure; Path=/; Domain=myteamspeak.com
Server: cloudflare
CF-RAY: a025650c8f8a58ea-TXL
Raw [failed to parse as JSON]
.\xad..(...$18057e11-4954-d5da-a797-ae88a8c614d7.$ee40eebf-64ae-4ec3-9db5-cd01bf7aba60
And the successful one directly after:
POST https://clientapi.myteamspeak.com/synchronization HTTP/1.1
Accept: */*
Connection: close
Content-Length: 1120
Content-Type: application/ts3cloud
Host: clientapi.myteamspeak.com
User-Agent: cpp-httplib/0.11.1
Raw
.requestServerItems
$4936afd0-3514-4a0e-9dce-0b5b33c69e52.\x96..$6def187e-d3a3-3058-0242-80c0f4dbc251.L
$22f64257-c763-2975-c415-c3d5865543a1.$4d94cf9c-87a6-1f30-2046-9652b137edba.L
$40874935-0143-d8cd-07f9-8c0365ca5891.$6622c12f-9d5c-0faf-00aa-031419d00e5c.L
$4c2eece0-8e35-809f-2bd1-69c83b3b3c84.$1d4f7228-30b5-7622-0717-898ce2d700d8.L
$57dd7710-0e16-aa6d-3f59-caa728bf1039.$6a2ab0d0-4d0a-7cce-e2d3-269d0608e74b.L
$87fd9ec8-ca7a-9908-5efb-66d84efe6faa.$d250788c-e77b-8625-b57c-ed790c21397c.L
$be7346e2-d198-e6d3-96f8-673172015548.$f0f6d9cb-1704-e30c-663c-f4d22cb8bda1.L
$ddfed610-3db2-9d1b-d1ae-714a837a6a92.$56ad2263-d3f0-5911-db57-aff6dcde913e.L
$ec42465f-31f3-e867-0911-3a872ff48478.$757ae9f9-b059-c374-4d53-f13dc8162ff8.v...$97d8b58f-c6bb-69cd-8a8b-c4d6d1b92d5c.L
$90307a7e-3dca-9fbb-df9e-aee863f234f6.$9989c851-37ef-f8a9-6b42-5308b81574c7.v...$8ee174da-52ce-a6b8-3067-1514aac4962c.L
$604e61bc-f7d7-4d6d-97e1-e475eefcba47.$46ef7cf1-da56-354e-2c9c-df8116399b60.v...$ba14ec57-fdcd-f1f8-6fd2-2caae239830e.L
$11111111-aaaa-aaaa-aaaa-aaaaaaaaaaaa.$5fe8a1d2-f807-a772-a42e-4187e71e8eac.$ee40eebf-64ae-4ec3-9db5-cd01bf7aba60
Answer:
HTTP/1.1 200 OK
Date: Wed, 27 May 2026 13:39:01 GMT
Content-Type: application/json
Content-Length: 83
Connection: close
via: 1.1 google
cf-cache-status: DYNAMIC
set-cookie: __cf_bm=WitKFwKmegECOO4jOUHKkjUHlob1tdDNrrtloIM3Pdc-1779889141.6626892-1.0.1.1-ZzVhHoARj1lzbFhxPcNsW9HyWlyP7Uyxa8gGcS_8lXcE9tIoQBuZa95gVToJU.NQ7jJs9gKCtfASZGIQ9rBSk2rkWywZKk3ObEtyePidQyht3JkqobUy9hYHW7F4rA1O; HttpOnly; SameSite=None; Secure; Path=/; Domain=myteamspeak.com; Expires=Wed, 27 May 2026 14:09:01 GMT
set-cookie: _cfuvid=rcz1o9S3yIksmR1AJvHCfXAp7oKbC1RCIQy1yJ9Hv_c-1779889141.6626892-1.0.1.1-6yVm2hPYLovAgEGlEd3xtvjQnW3_ZWIO18e6LhpP77U; HttpOnly; SameSite=None; Secure; Path=/; Domain=myteamspeak.com
Server: cloudflare
CF-RAY: a0256c5f6866469d-TXL
Raw [failed to parse as JSON]
.\xad..(...$18057e11-4954-d5da-a797-ae88a8c614d7.$ee40eebf-64ae-4ec3-9db5-cd01bf7aba60
Anyone any ideas ?
Do you currently still get those errors? I can see them in my logs as well, however they are no longer printed as of 1,5h ago.
Yeah. It seems it not much more than annoying since everythink works but I have notifications enabled and dont want to disable them. This error will also cause a notification. The timing seems completely irregular. No pattern. Just sometimes.
I confirm. I get these warnings several times a day in Windows 11.
No change after:
disabling antivirus
changing internet connection
running TS3 as administrator.
it almost seems like api responses are 400 without beeing real 400 responses. since they are the same as the 200 responses
