OS Name/Version:
- Target: Windows Server 2019 Essentials (Full-Updated)
- Linux: Debian GNU/Linux 11 (bullseye) (Full-Updated)
Product Name/Version:
- AMP Windows Server 2.4.5.4
- AMP Debian 2.4.5.4
Problem Description:
After Upgrade to latest AMP-Version/OS i was not able to manage my Windows Target instance. I got always, after clicking inside my controller-panel my Windows-target, following message: “Unexpected character encountered while parsing value: <. Path ‘’, line 0, position 0.”. I can not add it even after a reinstallation the target. (Same error)
Linux Target is working! I can manage my Linux target without any problems. It’s only my Windows target who has after upgrade this problems.
AMPLOG 2023-07-29 16-31-15.txt:
[17:50:33] [AMPAPI:admin Error] : Failure parsing API response
[17:50:33] [Core:admin Error] : JsonReaderException
[17:50:33] [Core:admin Error] : [0] (JsonReaderException) : Unexpected character encountered while parsing value: <. Path '', line 0, position 0.
[17:50:33] [Core:admin Error] : at Newtonsoft.Json.JsonTextReader.ParseValue()
at Newtonsoft.Json.JsonReader.ReadForType(JsonContract contract, Boolean hasConverter)
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.Deserialize(JsonReader reader, Type objectType, Boolean checkAdditionalContent)
at Newtonsoft.Json.JsonSerializer.DeserializeInternal(JsonReader reader, Type objectType)
at Newtonsoft.Json.JsonConvert.DeserializeObject(String value, Type type, JsonSerializerSettings settings)
at AMPAPI.RemoteInstance.<GetResponseDynamic>()
[17:50:33] [AMPAPI:admin Error] : <!DOCTYPE html><html lang="en-US"><head><title>Just a moment...</title><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=Edge"><meta name="robots" content="noindex,nofollow"><meta name="viewport" content="width=device-width,initial-scale=1"><link href="/cdn-cgi/styles/challenges.css" rel="stylesheet"></head><body class="no-js"><div class="main-wrapper" role="main"><div class="main-content"><noscript><div id="challenge-error-title"><div class="h2"><span class="icon-wrapper"><div class="heading-icon warning-icon"></div></span><span id="challenge-error-text">Enable JavaScript and cookies to continue</span></div></div></noscript><form id="challenge-form" action="/API/Core/Login?__cf_chl_f_tk=JndGqsN8MBgK3_iwmp2hgdkTUTyDFylBQ1GTsaaoIk4-1690653070-0-gaNycGzNCvs" method="POST" enctype="application/x-www-form-urlencoded"><input type="hidden" name="md" 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[17:50:33] [Core:admin Error] : JsonReaderException
[17:50:33] [Core:admin Error] : [0] (JsonReaderException) : Unexpected character encountered while parsing value: <. Path '', line 0, position 0.
[17:50:33] [Core:admin Error] : at Newtonsoft.Json.JsonTextReader.ParseValue()
at Newtonsoft.Json.JsonReader.ReadForType(JsonContract contract, Boolean hasConverter)
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.Deserialize(JsonReader reader, Type objectType, Boolean checkAdditionalContent)
at Newtonsoft.Json.JsonSerializer.DeserializeInternal(JsonReader reader, Type objectType)
at Newtonsoft.Json.JsonConvert.DeserializeObject(String value, Type type, JsonSerializerSettings settings)
at AMPAPI.RemoteInstance.<GetResponseDynamic>()
at AMPAPI.RemoteInstance.API_Core.<Login>()
at ADSModule.WebMethods.<TestADSLoginDetails>()
Steps to reproduce:
I remove AMP from my Windowsserver and deleted/removed C:\AMPDatastore / Service and start reinstalling.
- Restart Windows
- AMP User (Administrator)
- Download AMPSetup.msi and start.
- Install and chose inside setup “Target”
- Add following Informations [AMP First Time Setup, (Domain,PW,Token examples)]
Friendly-Name:
Target-WindowsS19E-1
ADS Controller URL:
https://amp-controller.ampiscool.xyz
ADS Username:
admin
ADS-Password:
**********
ADS Two-Factor Token:
123456
After next, following error appers:
"Unable to validate controller details
The login details could not be validated: Unexpected character encountered while parsing value: <. Path ‘’, line 0, position 0.".
See error log: AMPLOG 2023-07-29 16-31-15.txt (see above)
Actions taken to resolve so far:
Reinstallation, searching forum and stackoverflow, taking simple passwords, names …
Thank you all for your help and stay healthy