Lately, my 3 mining machines is having the same of this problem:

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º     Claymore's Dual ETH + DCR/SC/LBC/PASC GPU Miner v10.6      º
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ETH: 1 pool is specified
Main Ethereum pool is eu1-etc.ethermine.org:4444
DCR: 0 pool is specified
AMD OpenCL platform not found
Be careful with overclocking, use default clocks for first tests
Press "s" for current statistics, "0".."9" to turn on/off cards, "r" to reload pools, "e" or "d" to select current pool
CUDA initializing...

NVIDIA Cards available: 6
CUDA Driver Version/Runtime Version: 9.1/8.0
GPU #0: GeForce GTX 1060 3GB, 3072 MB available, 9 compute units, capability: 6.1  (pci bus 1:0:0)

GPU #1: GeForce GTX 1060 3GB, 3072 MB available, 9 compute units, capability: 6.1  (pci bus 2:0:0)

GPU #2: GeForce GTX 1060 3GB, 3072 MB available, 9 compute units, capability: 6.1  (pci bus 3:0:0)

GPU #3: GeForce GTX 1060 3GB, 3072 MB available, 9 compute units, capability: 6.1  (pci bus 5:0:0)

GPU #4: GeForce GTX 1060 3GB, 3072 MB available, 9 compute units, capability: 6.1  (pci bus 6:0:0)

GPU #5: GeForce GTX 1060 3GB, 3072 MB available, 9 compute units, capability: 6.1  (pci bus 7:0:0)

Total cards: 6
ETH: Stratum - connecting to 'eu1-etc.ethermine.org' <37.187.56.197> port 4444
No pool specified for Decred! Ethereum-only mining mode is enabled
ETHEREUM-ONLY MINING MODE ENABLED (-mode 1)
ETH: eth-proxy stratum mode
Watchdog enabled
Remote management (READ-ONLY MODE) is enabled on port 3333

ETH: Stratum - Connected (eu1-etc.ethermine.org:4444)
ETH: Authorized
Setting DAG epoch #177...
Setting DAG epoch #177 for GPU5
Setting DAG epoch #177 for GPU2
Create GPU buffer for GPU2
Setting DAG epoch #177 for GPU1
Setting DAG epoch #177 for GPU0
Setting DAG epoch #177 for GPU4
Setting DAG epoch #177 for GPU3
Create GPU buffer for GPU5
Create GPU buffer for GPU4
Create GPU buffer for GPU0
Create GPU buffer for GPU1
Create GPU buffer for GPU3
CUDA error - cannot allocate big buffer for DAG. Check readme.txt for possible solutions.
CUDA error - cannot allocate big buffer for DAG. Check readme.txt for possible solutions.
CUDA error - cannot allocate big buffer for DAG. Check readme.txt for possible solutions.
CUDA error - cannot allocate big buffer for DAG. Check readme.txt for possible solutions.
CUDA error - cannot allocate big buffer for DAG. Check readme.txt for possible solutions.
CUDA error - cannot allocate big buffer for DAG. Check readme.txt for possible solutions.
Setting DAG epoch #177 for GPU2
GPU 2 failed
GPU 2, CUDA error 11 - cannot write buffer for DAG
GPU 0 failed
GPU 4 failed
Setting DAG epoch #177 for GPU4
Setting DAG epoch #177 for GPU0
GPU 3 failed
GPU 5 failed
GPU 4, CUDA error 11 - cannot write buffer for DAG
Setting DAG epoch #177 for GPU3
Setting DAG epoch #177 for GPU5
GPU 0, CUDA error 11 - cannot write buffer for DAG
GPU 3, CUDA error 11 - cannot write buffer for DAG
GPU 5, CUDA error 11 - cannot write buffer for DAG
GPU 1 failed
Setting DAG epoch #177 for GPU1
GPU 1, CUDA error 11 - cannot write buffer for DAG
GPU 2 failed
GPU 3 failed
GPU 0 failed
GPU 4 failed
GPU 1 failed
GPU 5 failed
ETH: 02/04/18-20:34:51 - New job from eu1-etc.ethermine.org:4444
ETH - Total Speed: 0.000 Mh/s, Total Shares: 0, Rejected: 0, Time: 00:00
ETH: GPU0 0.000 Mh/s, GPU1 0.000 Mh/s, GPU2 0.000 Mh/s, GPU3 0.000 Mh/s, GPU4 0.000 Mh/s, GPU5 0.000 Mh/s

NOTE: I'm using my windows 10 Pro version 1709. updated to the latest driver of GPU, latest claymore v10.6.I have already checked readme.txt, set virtual memory size, turn off windows update and windows defender, and not OC anything that related to GPUs. and it still not working.
thank you for reading.

I am proud of my latest creation (worked on it for many months).
I have published the zcash, zclassic, ... solver at
   github.com/funakoshi2718/funakoshi-miner
just a few hours ago.

according to nicehash github he is helping with nheqminer now ))

The exciting Cbuchner times are over long ago ,but leave djm34 alone , he makes the soft and he decides what to do with it! He has no obligation to anyone of us!