# Windows 11 Guides

# Troubleshooting

# SMB (File Sharing) Troubleshooting

#### Problem

You receive the following error message:  
**Error 0x80070035: TODO(error message).**

#### Solution

[AllowInsecureGuestAuth.reg](https://kb.havlas.me/attachments/2)  
[DisableSMBClientSigning.reg](https://kb.havlas.me/attachments/3)

##### Using Command Prompt

```cmd
reg add "HKLM\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters" ^
  /v AllowInsecureGuestAuth /t REG_DWORD /d 1 /f

reg add "HKLM\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters" ^
  /v EnableSecuritySignature /t REG_DWORD /d 0 /f
reg add "HKLM\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters" ^
  /v RequireSecuritySignature /t REG_DWORD /d 0 /f
```

### Refusing to Accept Valid Credentials


#### Solution - Change SID

[SIDCHG.exe](https://kb.havlas.me/attachments/20)

<https://www.stratesave.com/html/sidchg.html>

> They provide trial keys, in case they are expired simply change system time to match expiration date.