Because of the GTX1050Ti (and other 4 GB Nvidia cards) problems under Windows, here is a special release that will solve the issue for a few more weeks. That's the best that can be done, because Nvidia drivers just won't allow to allocate enough VRAM even when it is available. Note that if you don't have 4 GB Nvidia cards, there is no point to use the 4.7a - there are only some small fixes for rare bugs. You can download PhoenixMiner 4.7a from here:

https://mega.nz/#F!fVUGRK4C!CRF040jyvAgr-DJDBn-gTQ  (MEGA)

If you want to check the integrity of the downloaded file, please use the following hashes (you need the last file PhoenixMiner_NVRTC_Windows.zip only if you want to mine BCI with Nvdia cards under Windows):

Here are the new features for this release:

• Reduced VRAM usage for Nvidia cards on Windows to allow slightly longer operation of 4 GB cards under Windows 10 (few weeks to a month, then the problem will appear again)
• Other small improvements and fixes.

Remember to add -rvram -1 -eres 0 to your command-line or config.txt file in order to lower the memory usage as much as possible.