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Why can't DNF be updated?
1, the driver is unstable and incompatible with the system, which most easily causes the memory to be unreadable for file protection.

2. One or more rogue softwares are installed in the system, which may cause IE or the system to crash, and file protection may also occur.

3. There are conflicts between the programs loaded by the system or the programs running by the system, especially some anti-virus software monitoring programs.

4. The system itself is vulnerable to network attacks.

5. Virus problem is also the main cause of unreadable memory, file protection and Explorer.exe error. ...

6. If the memory can't be read when playing a game, it is likely that the graphics card driver is not suitable, or the DX9.0C version is not new enough or does not meet the game and graphics card driver.

7. Some software itself is insufficient.

8; Poor compatibility between computer memory and motherboard is also the fatal reason why memory can't be read!

If the above problems can't be solved, do the system again (it is recommended to use a new system disk). Such a problem is unlikely to be fixed.