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Problems & Troubleshooting
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Knowledgebase Windows PC Platform Problems & Troubleshooting

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Sandra does not start (generic)

If you are using Sandra Lite, please update to the latest version of Sandra. See Download Sites for Sandra Lite. If you are using a commercial version of Sandra (Professional, Engineer, Portable, Ente...

2,559
(36)
Database failure / No Reference Results / Cannot Save Results

Unfortunately your MDAC (database access) installation has been damaged. Sadly it is very sensible and prone to such mishaps as it is not protected by Windows' protection system. Please use MDAC comp...

2,379
(73)
Sandra says its device driver cannot start

This can sometimes happen when the device driver (sandra.sys) has previously been marked for removal thus the new driver could not be registered. 1. Sometimes, if you close Sandra and run it again ...

1,070
(32)
Windows Defender Core Isolation features and Sandra’s Kernel Driver

Microsoft has started to ask Windows users to enable additional security features that may not be compatible Sandra's kernel driver (Sandra.sys). As this driver must run in kernel space and directly i...

2,817
(1)
"Kernel-mode Hardware-enforced Stack Protection" and Sandra's Kernel Driver

hen running Sandra on recent Windows 11 versions and hardware you may receive a pop-up stating that "Sandra.sys (aka the kernel driver) cannot be loaded on this device due to a security feature called...

2,394
(1)
Sandra says it cannot connect to server/service

Sandra is client/server thus running as such even on a single computer (client-the GUI, server-the agent). The GUI (client) thus needs to connect to the service (Sandra herself).But you do NOT need to...

6,002
(66)
Information is displayed as asterisks (***)

For privacy reasons - as some people copy and paste reports online - sensitive information (serial numbers, keys, codes, etc.) is not fully displayed. Some of it is blanked out with asterisks (***) bu...

2,550
(42)
Sandra refuses to run - licensing issue

It is likely you are using the software in a manner that does not comply with the licence.For example, the Lite and Pro/Home version does not run on domains; the Pro/Home is licensed for home/personal...

1,059
(33)
GPGPU benchmarks cause video driver to crash!

On modern Windows (10, 11, etc) the video driver is killed and re-started if it does not respond for 2 seconds.Unfortunately, some GPGPU tasks (kernels) may execute for longer depending on the video c...

1,180
(32)
GPGPU benchmarks lock up!

Some GPGPU run-times do not work correctly with Sandra. Usually, Windows does kill and re-start the video driver if it locks up but sometimes it is only the GPGPU task that fails: - OpenCL is gener...

1,585
(31)