✎ ISSUE: Cannot open the client user interface with error Invalid byte 1 of 1-byte UTF-8 sequence [Ahsay Wiki]

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=====  ISSUE: Cannot open the client user interface with error Invalid byte 1 of 1-byte UTF-8 sequence   =====

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 <b>
  Article ID:
 </b>
 8042
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 <b>
  Reviewed:
 </b>
 08/02/2018
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 <br/>
 <b>
  Product Version:
 </b>
 <br/>
 AhsayACB / AhsayOBM: 8.1 or above
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 OS: Windows
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===== Problem Description =====
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When opening the AhsayOBM / ACB user interface, the following error message is displayed:
 <br/>
 <br/>
 <i>
Invalid byte 1 of 1-byte UTF-8 sequence
 </i>
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<br>
<img style="width:50%; border:thin solid black" src="http://wiki.ahsay.com/lib/exe/fetch.php?media=public:8042_1.png"/>
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===== Cause =====
This issue can occurs if the AhsayOBM / ACB user settings file (e.g. ~\.obm\config\settings.sys) saved on the client computer is corrupted.


===== Resolution =====
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To resolve the issue, remove, then re-create the user settings file on the affected client computer.
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<font color=red>Important</font>: Before proceeding to the next step, ensure that you have the encryption key for all backup sets of the affected user.  Re-creating the user profile will require you to enter the encryption key for all existing backup sets.
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<br>
For more details and best practice for managing encryption key, refer to the following KB article: <a href="http://wiki.ahsay.com/doku.php?id=public:8015_faq:best_practices_for_managing_encryption_key#I%20am%20prompted%20to%20enter%20the%20encryption%20key%20of%20my%20backup%20sets,%20why%20is%20that?">FAQ: Best practices for managing encryption key on AhsayOBM or AhsayACB</a>
<br>
<br>
Refer to the following steps to resolve the issue:
<br>
<ol>
<li><font color=black>Stop the AhsayOBM / ACB services</font></li><br>
<li><font color=black>Locate the settings.sys file in the .obm / .acb folder at:
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<br>
%UserProfile%\.obm\config\settings.sys&nbsp;&nbsp;&nbsp;or
<br>
%UserProfile%\.acb\config\settings.sys
<br>
<br>
<img style="width:55%" src="http://wiki.ahsay.com/lib/exe/fetch.php?media=public:obm_pad_block_corrupted2.png"/>
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Note: Exact path to the .obm / .acb folder is saved in the home.txt file found at:
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C:\ProgramData\AhsayOBM\home.txt&nbsp;&nbsp;&nbsp;or
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C:\ProgramData\AhsayACB\home.txt</font>
</li>
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<li><font color=black>Rename the settings.sys file to BACKUP_settings.sys</font></li><br>
<li><font color=black>Login to the AhsayOBM / ACB user interface
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<br>
At this point, the client application will prompt for encryption key of all existing backup sets. You must enter the correct encryption key of each backup set to regain access to them.
<br>
<br>
<img style="width:65%" src="http://wiki.ahsay.com/lib/exe/fetch.php?media=public:obm_pad_block_corrupted3.png"/>
</font></li>
</ol>
</html>


===== Keywords =====
pad, block, corrupted, cannot, can't, login, open, GUI, UI
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