Vranger 7.5.1 - Failed to create an IPC Port: Access is denied - GUI not loading

Hi everybody,

our GUI isn't loading anymore. Services (both Vranger and SQL) are up and running, also the Vranger backup tasks are performed normally.

System Specs: WIN 2008R2 with latest updates + Win MGMT framework 4.0 + SQL 2008R2

We run the following cmd:

vizioncore.vranger.service.exe DEBUG

[12.19.2016 03:19:48:3914] Service Status: Loading
[12.19.2016 03:19:48:9218] MSSQL$VRANGERPRO:Running
[12.19.2016 03:19:49:6238] Starting Manager DiagnosticsManager......[12.19.2016 03:19:49:6238] started successfully, elapsed time: 00:00:00.00
[12.19.2016 03:19:49:6238] Starting Manager ClientManager......[12.19.2016 03:19:49:6238] started successfully, elapsed time: 00:00:00.00
[12.19.2016 03:19:49:6394] Starting Manager EventManager......[12.19.2016 03:19:49:6394] started successfully, elapsed time: 00:00:00.00
[12.19.2016 03:19:49:6394] Starting Manager ConnectionManager......[12.19.2016 03:19:50:1230] started successfully, elapsed time: 00:00:00.47
[12.19.2016 03:19:50:1230] Starting Manager HypervInventoryManager......[12.19.2016 03:19:50:4818] started successfully, elapsed time: 00:00:00.35
[12.19.2016 03:19:50:4818] Starting Manager VmwareInventoryManager......[12.19.2016 03:19:50:4818] started successfully, elapsed time: 00:00:00.00
[12.19.2016 03:19:50:4974] Starting Manager CloudDirectorInventoryManager......[12.19.2016 03:19:50:4974] started successfully, elapsed time: 00:00:00.00
[12.19.2016 03:19:50:4974] Starting Manager PhysicalInventoryManager......[12.19.2016 03:19:50:5130] started successfully, elapsed time: 00:00:00.01
[12.19.2016 03:19:50:5286] Starting Manager LicensingManager......[12.19.2016 03:19:50:9654] started successfully, elapsed time: 00:00:00.42
[12.19.2016 03:19:50:9654] Starting Manager ConfigurationOptionsManager......[12.19.2016 03:19:51:0278] started successfully, elapsed time: 00:00:00.05
[12.19.2016 03:19:51:0434] Valid Database Version found.
[12.19.2016 03:19:51:0434] Starting Manager CatalogManager......[12.19.2016 03:19:51:0434] started successfully, elapsed time: 00:00:00.00
[12.19.2016 03:19:51:0434] Starting Manager LockManager......[12.19.2016 03:19:51:0434] started successfully, elapsed time: 00:00:00.00
[12.19.2016 03:19:51:0590] Starting Manager ReportManager......[12.19.2016 03:19:51:0902] started successfully, elapsed time: 00:00:00.02
[12.19.2016 03:19:51:0902] Starting Manager JobManager......[12.19.2016 03:19:51:9014] started successfully, elapsed time: 00:00:00.80
[12.19.2016 03:19:51:9170] Starting Manager LinuxFLRManager......[12.19.2016 03:19:51:9170] started successfully, elapsed time: 00:00:00.00
[12.19.2016 03:19:51:9170] Starting Manager VirtualApplianceManager......[12.19.2016 03:19:51:9326] started successfully, elapsed time: 00:00:00.00
[12.19.2016 03:19:51:9326] Starting Manager RepositoryManager......[12.19.2016 03:19:51:9482] started successfully, elapsed time: 00:00:00.01
[12.19.2016 03:19:51:9638] Starting Manager RestoreDiskManager......[12.19.2016 03:19:51:9638] started successfully, elapsed time: 00:00:00.00
[12.19.2016 03:19:51:9794] vRanger Backup & Replication encountered an error during startup. The exact error message was: Fehler beim Erstellen eines IPC-Ports: Zugriff verweigert
.
[12.19.2016 03:19:51:9950] Service Status: Failed

The problem also encounters in version 7.3.1.

My research says it maybe has something to do with SQL authentification (maybe wrong credentials in cache or so) but not sure.

Thanks for helping me out.