Veeam Backup Error: Code 1326

KB ID 0001456

Problem

Processing {Server-Name} Error: Failed to connect to guest agent. Errors: ‘Cannot connect to the host’s administrative share. Host: [{Server-Name}]. Account: [{Account-Name}]. Win32 error:The user name or password is incorrect. Code: 1326 Cannot connect to the host’s administrative share. Host: [{IP-Address}]. Account: [{Account-Name}]. Win32 error:The user name or password is incorrect. Code: 1326 ‘

Failed to prepare guest for hot backup. Error: Failed to connect to guest agent. Errors: ‘Cannot connect to the host’s administrative share. Host: [{Server-Name}.amf.local]. Account: [{Account-Name}]. Win32 error:The user name or password is incorrect. Code: 1326 Cannot connect to the host’s administrative share. Host: [{IP-Address}]. Account: [{Account-Name}]. Win32 error:The user name or password is incorrect. Code: 1326 ‘
Error: Failed to connect to guest agent. Errors: ‘Cannot connect to the host’s administrative share. Host: [{Server-Name}.amf.local]. Account: [{Account-Name}]. Win32 error:The user name or password is incorrect. Code: 1326 Cannot connect to the host’s administrative share. Host: [{IP-Address}]. Account: [{Account-Name}]. Win32 error:The user name or password is incorrect. Code: 1326 ‘

Solution

Firstly, make sure the user that you are running the backup job as, has the correct rights! Also set it up as DOMAIN-NAME\Username. If you have selected application award processing, make sure that user has the appropriate rights (or an additional user is added for applications like SQL, Oracle etc.)

Go to the properties of the job, Guest Processing > Credentials.

Select the server producing the error > Set User > Standard Credentials > Select the appropriate user > OK > OK.

Then use the “Test Now” button, and ensure the authentication works correctly.

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Veeam Backup Error: ‘Failed to prepare guest for hot backup’

KB ID 0000799 

Problem

While backing up a couple of servers (SBS box and a TS/RDP Server) I got this error;

Failed to prepare guest for hot backup. Error VSSControl Failed to prepare guest for freeze, wait timeout 900 sec

Solution

This is common if the target server is a ‘busy’ server (like SBS or SQL). You may need to make a registry change on the Veeam Server.

1. Start > Run >regedit {enter}.

2. Navigate to;

[box]HKEY_LOCAL_MACHINE > SOFTWARE > VeeaM > Veeam Backup and Replication[/box]

3. Create a new 32 bit DWORD value called VssPreparationTimeout and set its value to 180000 decimal (30 minutes).

3. Then restart the Veeam services, and try again.

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ARCServe Error E8535 (Failed to receive data from client agent)

KB ID 0000011

Problem

Backup job fails with above error, seen on exchange document/brick level backup

Solution

1. Start > Run > Regedit {enter}.
2. Navigate to HKEY_LOCAL_MACHINESOFTWAREComputerAssociatesBrightStor ARCserve BackupBaseTaskRemote.
3. Change the following two DWORD entries so that they read 3600 (Hexadecimal) or 13824 Decimal.

ReceiveTimeOut

SendTimeOut

4. Reboot.

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