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Mapped Drives Not Allowing Access


This is from the website I found to fix an issue with mapped drives saying they are inaccessible when students clearly have proper permission and rights. Note: I am also able to get access to these drives from my admin account, meaning the drives themselves actually are not inaccessible.


  • Make sure the files are synchronized before you run the automatic fix. Otherwise, unsynchronized changes will be lost.
  • The sync relationship for redirected folders will be re-created the next time group policy applies. Alternatively, run the following command:
    gpupdate /force
  • This wizard may be in English only. However, the automatic fix also works for other language versions of Windows.
  • If you are not on the computer that has the problem, save the Fix it solution to a flash drive or a CD and then run it on the computer that has the problem.

Then, go to the "Did this fix the problem?" section.


Let me fix it myself

To resolve this problem, re-initialize the cache of offline files. To do this, follow these steps:

  1. Click Start, type regedit in the Start Search box, and then press Enter.

    Note If you are prompted for an administrator password or for confirmation, type the password or click Continue.
  2. Locate the following registry subkey, and then right-click it:
  3. Point to New, and then click Key.
  4. Type Parameters in the box.
  5. Right-click Parameters, point to New, and then click DWORD (32-bit)Value.
  6. Type FormatDatabase, and then press Enter.
  7. Right-click FormatDatabase, and then click Modify.
  8. In the Value data box, type 1, and then click OK.
  9. Exit Registry Editor, and then restart the computer.

Note Make sure that files are synchronized before you add this registry entry. Otherwise, unsynchronized changes will be lost.

You can also automate the process of setting this registry value by using the Reg.exe command line tool. To do this, run the following command from an administrative command prompt:

REG ADD "HKLM\System\CurrentControlSet\Services\CSC\Parameters" /v FormatDatabase /t REG_DWORD /d 1 /f
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Article details
Article ID: 41
Category: Mapped Drives
Date added: 27-Oct-2016 2:39pm
Views: 631
Rating (Votes): Article rated 5.0/5.0 (1)

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